SCIENTIFIC ABSTRACT TANANAYEV, I.V. - TANANAYEV, I.V.

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SCIENTIFIC ABSTRACT
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Ud--,jR/dhiisiatrY: Lead Th6orium `~2, Systems "Physico-chemical Analysis of Systems of Importance to Analytical Chemistry. XX. TheL Solubility of Iliecipitates in Complex (Really Existing) Anklyti- cal. Systems," I. V. Tananayev, I. B. Misetskaya, A.' D. Vinogradova, InSt of Gen and Inorg,Chem, AcaA Sci USSR ."Zhur Arialit Xhim" Vol VII, No 1, py 14-20 Studied soly in the system PbSO4 -. Th(NO - Li Soh- a ? 2 0 at 250C. The Debye-Rueekel formu.1 or caleg Nte soly of PbSO4 is not suitable for this system, because of the marked chem interaction accompanied 209T8 USSR/Chemistry Lead, Theorium Jan/Feb 52 Systems (Contd) 2+ by formation of ions of the type ThS02 . -Considers the 't-hi,oryn of pptn reactions, and a diagram shoit the following types of ternary systems: ypt - electrolyte with common ion - water, embracing all possible systems vith ppts in dependence on the ion type of the components and the character of the process of interaction in the system. (CA 41 h*.-Iq;q?4q TANAMYNY. I.V,; GWSHKOVA, M.A.; SITYER, G.B. Chemistry of lanthanum forrocyanides and their application in ana- lytic chemistry. Khtm.redk.elem. no-1:58-86 154. (KM 8:3) 1. Institut obahchey i neorganichaskoy khImil Im. N.S.Xurnakova AN SM - (Lanthanum ferrocyanide) TAILNAYW, I.V.; IMYCM4AN, B.N. 3 the solutions of indium fluoride andL oxalate. M21m. rodk.elem. no-1:87-94 154. (MM 8:3) 1. Inatitut obshchey i neorganicheskoy khimii im. N.S.Eurnakova AN SM. (Indium salts) Ad*ii1T" A d1j T _.7 m A k~ . en a v, g- lot n in ot 30 g. 100 11;Melt with gentle In the ptevnca oI H304; (allowed ' Alon of I.M, 11A. cohm , washing of the t)pt. with 50% art EtOH d.air-drying 2-3 days gave: colorless rnI7i.3LrG, tetrag at Prfstim, no 1.460, na 1.427, sot. in 11,0 (5.8% at 25* 1 Sol. in HCI and, 11NOl, less sot. in Ht,904; reacts with NaOll but gives no ppt. with CaCI: The x-my dia- gram Is given'l Oi!,P,Wt ogl,,the&It sl;owq endothermic k.'Usr stleorresponds to loss of effects at~Hqrffi Ilifn _ 4H.0 dfid Zklify- tllt%lid top loss of 1110 ancl HF-to, form FA' Alle' T I r l kit f N V 11 t 25% b - . l- n a ein ow % n a e l a MIF supersutd. solns. are fornied; 1001-130 Is the solid phasm. At 0.150, NaP and 9.89% InFj therearc formed InF, and 3W.103; at Nal? conens. up to 2.5, the solid phase Is 3NdF.[,n& somewhat sot. in MOIL sot. in FICI, TINOs and H30, yielding a ppt. with CaCII. - Its x-ray dia- grant.differs considerably froin that of NaP or Itirs-314to. shom 3NaP.1ur endothermic effects at M., SM, rind 870% possibly caused, I)y.partW 10.13. of F. the c6inpIq thelts above 1000*. toNWdP4M;j._ ~~ _A physleachemical rMlysts ~of s St&MS I Va ut- a Y r UUM --jrXKV. To y actiOil Of tOMd-:! of to, d u Y lion l fdUiinur~ ~Yiroxldo by we"Utulnent of tho it arent of the precipit4tec. L V. Tanatiaev and"91. A.:- 0 Va. '~M anal.: ghfinq Mid. Neuk TrIf4y IF U's S_ 10luslik.. -F, --.- - --- - ' - Ah N40 Z(B), M-53(lQ54); rf. (ut, w T- qur.'711101. stq. 147 Is -Thc npliiftrit vol. ill the 03 ipf, 48, 8011 M, i~ f to - plitit. of Al(OFI)~,' The M. ill ppt~ I's Plotted 't. d y tht 2gainst the ratio 011.Al in the or164nal wixt, Cathonute-1 IreeNA011 soln., and AKNO,~ and AIASO), vins. contg. tit) I ift. 464 were vicd. Into a 2&-jnl duated tube intro-i duct the At whi 140, and KaOH, i such (tuits. Iluit after! adkin. of,the NaOlf th.- vol, 6 25 mt. Stapptr the who and -they) invext approx, 200 flints.: After a dad. interval reud ..the upper butindary of the ppt. In expts..Avith const. At , eontent-(0,01-0.0U, f) Rpm of plit. begins when the rat 011:Alisapprox.2.4. Thecurvehasa max. utOMAI - 3.~ * -,m 2.8, At cannot bc detected in sriln. and the vnl, i AtOH:Al txiu& less than at 0111 At ~w 3. At 011: A m of t s 1 v v, at ;1~ 0 , 4,theppt~d1&solvesccnnpJetdy. Aftcribr.the- g -~" thax. could benotitedclearly. After24tim.thevol.ofEpt.~ - A h a ]A fterseveral hrg. *L4 Const. t roota tenip. the ppis w ic ; ed with 011 -At > 3 became whiter but the others t _rstart out corticd HC1 is added to each tube I -,didnotchange. Ifl-2tal., d i ed th ppts. forined witit 0H:AI < 3 quicki, an ml;. , e r dis- 'A Mlvi- b A the others remain lasol. for 24 lira. . In ~~ts- I where the sum. of:AI(N%)z and NaOll conchs. alwaysi equglied 0.1,11', addn~ of NaN(h (0,6 and IM) briore, the; NALOR does not ih."ge the gencral outfini, of the curve but ta..beghistarlier. With: the- systeta Al(N0j),-Nffj0II- but ife- the ppt.,Is a max.. tit OU:A,I._. r INgYM4E crvascs slut ly whea,iviore NMOIT is uddal.' When Nllia- 7 rp bcforeNlT,0H thismax.1stlis-', placed to the left immediately after pptn. but on standing Yre%torcs the max. to 0H-.AI 3. At NlIsNO, IM the inax. is displaced alightly. to the right and vol. of ppt. does; incittlecrmsesosli-.trljly.wlttitcxt=NH4OHisaddW, Pptn. ' ~,.: , occurs earlier than Qlr-.Al - 2. With Af~604~ - 0.011f,~ 'e F irtud N-.kOlt,pptti.lx-giiisnppr6x.wliemitdnes with AI(Nos)#. 'I'llerl 2max. arc obwved. at 011:A1 m 2.5 and at 3, witha min. betiveen them. 'The min. develops more clearly -by aging. With A14604h = 0;02AI and with NuCtUt them Is only 1 max. at 2.5. . Iror A1004s 0.(k2JV and with NFLOR, the first max remains the same but second tna%.is,' lesssharp. Hj0 with AI(NOj)~ w 0,04M., With no sulfate pptn. begins at OMM - 2.5. With 0.002,V of (NIIt)sS0, added the ppL. is stable at 0MAI -~ 2 mud the vol. is larger. .'The MaXASSWIFILM With (NH4M04 at 0.01AI this max. is at 2,6--2.7 and a very weak secood'atak.As displaced to the, rrisht.* At - 0.03M, the fma mat. is at,2.6-~2.7 atutthesmond max. ir more noticeable.! At CNU4)*SO4 0.3.1f the first max. is at 2.5 and the $Mand max dis- appwars. In significant conen. of sulfate the max, v~l. Of. ppt. is obtained at a point corresponding to a basic salt. 10. -olu. -it Al(0JJN.Al*(S0,),~ No A) ions arc,delected in 2A.. Existence- of second max,depends on many conditlowq. It is suggested that with a large, cxms ofAll~` the ions AI(011)"+ and AI(Oll),* are formed, with -Anall -"CCS$ of All' oilloidai Al(011h is formed. Sinerevenin the presence Of electrolytvs, AI(Otf)s is not st:pd. earlier- thau OH: At - 2. that vulue may be the boundary between the fortits, *ne intvrinedia(c stage would be a colkAAA 11ticelle, [A1(0ll),j.,jA1(0lI),+j.Cl-, Nr N4011 rfr MGM -ystems. AvO-~ F-, and malate cautsc caly ppla. of M. In Ilke icl)tl. -Ir AV- ai Al((,)11), frOla bi%-3ltUt Vikti(YaS IW I LICI 3-11111. Of XaOAc, nO exv,:-,,f N.%OAc colipti. ilie-lviv; ;1' i.,t;q. Adda, of;L lit thea c-ir,ftfl ttoitnfira,'+ 6-1 .,f the fr,,I- avill i, Mayelle /VA GRINBERG, A.A. (Leningrad); BABAYEVA, A.V.(Moscow); YATSIMIRSKIY. K.B. (Ivanovo); GORNKYKIN. V.I. (Moscow); BOLIY, G.S. (Moscow); FIAL- KOV. Ya.A- (Kiyev); YAKSHIN, M.M. (Moscow); XUR V. B.M. (Moscow); GILOUN, A.D. (Moscow); 73DOROV, I.A. (Moscow); PANSIKYUK, Ye.A. (Leningrad); VOLIKENSHTZYN, N.V. (Leningrad); ZHDANOV, G.S. (Moscow); PTITSYN, B.V. (Leningrad); ABLOV, A.V. (Kishinev); VOLSHTM, L.M. (Dnepropetrovsk); TROITSKAYA, A.D. (Kazan'); KIOCHKO, M.A. (Moscow); MARAYNTA, A.V.; TRONIV, V.G. (Moscow); RUBINSHTZYN, A.M.(Moscow) CHERSTAYN, I.I.; GRISBZRG, A.A.; TANANATIV, I.T. 31rplanation of the tranneffect. Isv.Sekt.plat.i blag.met. no.28: 56-126 154. (MLBA 7:9) (Compounds, Complex) (Platinum) TANIANAYJ~, I. V. rind N. V. "On the Formation reaction of gallium hydroxide", Khimiya RedIkikh Elementov, No. 2, ~,12, 1955. The mechanism of the formation of gallium hydroxide was investigated by a study of the system GaC13-NaOH-H2O. The measurements of solubility, liaht ~absorrtion and volumes of precipitates were used for the investigation. The reaction takes place in five stages, depending on the molar ratios of NaOH to GaGl in the initial mixture, with the suecessive formatidn of Ga(OH)'12, Ga(a)2C121 Ga(OH)2C' (soluble basic salts), Ga(OH)2.8ClO.2 (insoluble basic sal ), Ga(OH)3 and then soluble gallate. SO: D-1~13171 TANANAY3V,_I. V. and BAU507-A, N. V. "A study of the chemistry of gallium fluorides and their utilization for the separation of gallium from other metals", Kh:Lmiya Redkikh Elementov, No. 2, p 21, 1955- A method of preparation of GaF 3H20 by the action of hydrofluoric acid on metallic gallium. The reaction beKeen GaU ~ and HF in aqueous solutions was investigated, the 'Lormation of a stable ZP2, ion was established. Solubility in the system: GaF3-NaF-H20 at 25'C was investig-,'ted. The formation of a double salt of the composition 13NaF. 5GaF 30 practically insoluble in sodium fluoride solutions was established. On the basis of the latter a method of quantitative precipitation of -gallium. from Zn, Co, Ni, W, Mo, Cd and Cu was developed. SO: D-413171 ............. TANANAYEV, L"1. and S. N. "On indium ferrocyanides", Khimiya 9edkikh KLementov, No. 2, P 37, 1955. The systems: InCl Li Fe(CN)b-H 0- INC1 -Na Fe(CN)6H2O and 3 - 4 2 ) INC13-K4Fe (CN)6-H20 were investigat6d using solubiii-ty electroconductivity, potentiometrie and turbidometric methods. Concentrations of components were those used uncer normal analytical conditions. It was found that in the first two systems indium ions react forming salts of the normal composition In fFe(CN)673 and in the third system, in addition tothe normal, a doubl~4salt is formed uncer certain conditions. SO: D-413171 d cerium 1. V. Tagn-Bev G. vwsgmul zhlir' 11 i.' I.* i4a. I. D4-,%,R 17M C111 Cc(NO, LL -w- I Ort(CN)*1 If with'CL D. I n (NOA2 conca. Initially at 0. mol,/I., ad n. of L�4[Fc (CN causes stoiclAometric pptn. of CcdfFC(CN)sh.- 2OUX (1), whose tiWr soly. at 25'.=6 O.t* is 1.3 X 10-6 m0leff. In the system Qe(NOj)j-Na4jFe(CN~j"ffgO, IispPtd. initially, If Na4lFe(CN)s) Is added In excewthe. solid phase becomes NaCej[Fc(CM)sh.XJI'O, whose Say. is 2.1 X 10-4 mole/l.. In the system Y(N%),-K&[Fe- (CN)sFlf,Oj~ only K4V8fFe(CN),b.30ffjO ppts, soly. 6.2. X 10-6 mole/I.). In the system CH ACN)s), HrO the ppt. is KCtjFe(CNN).21ItO (soly. 2.4 X 10-4 In Y(N%),PNjFe(CN),j-HO only RbV- e CNM-21-10 is pptd. (soly. 1.8 X 10-4 rnole/L). In ( W%)~-Rb4[Ve(CN~J-11tO the ppt. Is RbCe(Fe(CNI~J.w- -.*0 (soly. 7.1 X 10-4 moleA.). In Y(NO.)rCs.[Fe- It (CN)#~-HO the ppt, is Csy[Fc(CN). tall"O (Soly. 5.2 X 10-6 wo".). In Ce(N%)~-"(Fe( N)*FHIO. the ppt. is CsCe[Fe(CNM.2If,O (soly. 1.7 X 10-1 mole/I.). In the systems Y(NO,)r-L4(Fc(CN)gF.H3O and Y(N%)r- Na4[Ft(CNhl-HiO.noYfeiTocyanideispptd. Itisthere- fore suggesied that pptn. svith MajjFetCNhj or L4(Fe- CN)'j nULY be useful in Sept. Ce from Y. C. It- F. 1 fl-N --":, - - - . . I - . 1. ! 7 f.4 v I~N -P;v - U -V- J 1--lhe fo=gi~an of 1. V. Tananaev an, N 0 'H"'Ml, (19mT. r- Wit M'S wa3 -itudled by the ructh(As of Eoly., j,v cit"i The %"A, -F!hc pl-t aj~-.,::r r~, us, W", U"d w vla nj 1: u2 USSR/Physical Chemistry Thermodynamics. Thermochemistry. Equilibrium. Physico- chemical,Analysis. Phase Transitions, B-8 Abst Journal: Referat Zhur Xhimiya, No l.. 1957, 380 Author: Tananayev ..Nikolayev, N. S,', Buslayev.. Yu. A. Inetitution.'m None Title: Investigation of the System HF-ZrF4-H2O by the Isothermal Solubility Method (Isotherm 0.50) Original Periodical: Zh. neorgan. khimii, 1956, Vol 1, No 2, 274-281 Abstract: The solubility at 0.50 in the system HF-ZrF4_H~10 has been investi- gated for the range 0-100 percent HF. The following solid phases were found in the system: ZrOF2-2H2O(I), ZrF4-3H20(II), H2ZrF6' H20(III), and ZrF4. From thermographic data thermal decomposition reactions for I, II, III, and ZrOF2 have been established. A method has been developed for the-determination of both F and Zr when present together. Card 1/1 TANAMOZY, I.T.; MARELMISHVILI, N.V. Study of the formation of silver hydroxide. Zhur.zleorgAhim. 1 no.8:1826-1831 Ag 156. (NLHA 9:11) (Silver hydroxide) USSR/Inorganic Chemistry - Complex Compounds. C. Abs Jour : Ref Zhur - Khimiya, No 9, 1957, 30291 Author : Tananayev, I.V., Seyfer, G.B. Inst Title Mixed Ferrocyanides of Magnesium, Rubidium and Cesium Orig Pub Zh. neorgan. khimii, 1956, 1, No 9, 2017-2023 Abst On the basis of the results of a study of the system MCI - Mg /-Fe(CH)e 7-H. .Y- ,0, wherein M is Rb or Cs, by the solubility method, it was found that the composition of the solid phase that separates, corresponds to, the for- mula 3K,&. J. - e(CN),j.l2KO. The composi- r_Fe(CN) , 4Kg.,L F tion is not altered on use of an excess of both compo- nents, in the case of Rb, while in the case of Ce, an ex- cess of Mg. - ,-f fe(a)dj causes the formation of Cs.,L Fe(CN)U.2KgWLFe(CN)47.l0H.3.0. Card 1/1 -,USSR/Inorganic Chemistry. Complex Compounds. C 'Abs Jour : Ref Zhur - Khimiya, No. 89 1957, 2649o. Author : Tananayev, I.V., Mzareulishvili, N.V. Inst : -_ Title Study of Reaction of Zinc Hydroxide Formation. Orig Pub Zh neorgan. khimli, 1956, 1, No. 10, 22i6 - 2221+. Abstract The system ZnS(~+ - NaOH - H 0 was studied by the solubility, the elec?~ical conduc- tivity, the potentiometric methods and the methods of light extinction and of precip- itate volume measurement. It was estab- lished that the reaction between ZnSO)+ and NaOH in an aqueous solution proceeds with the formation first of 4Zn(OH)2,ZnSOI+ M and of Zn(OH)2 (II) after that. Considering Card 112 ,,TJSSR/Inorganic Chemistry. Complex Compounds. C Abs Jour Ref Zhur - Khimiya, No. 87 1957, 2649o. the obtained data, the conclusion was arrived at that the quantitative determination of Zn2'~' by titration with an alkali solution Is possible by the following methods: a) geometrical (by the formation of I and II) b)~ conductometric (by the formation of I), and c) potentiometric (by the formation of II). Card 2/2 T4 at) V *."Y f~' ~': '/ 1; V; . USSR/Inorganic Chemistry. Complex Compounds. C Abs Jour Ref Zhur - Khimiya, No. 89 19577 26493. A Author Tananayev, I.V., Mzareulishvili, N.V. Inst Title Study of Reaction of Cadmium Hydroxide Formation. Orig Pub Zh. neorgan. khimii, 1956, 1. No- 10, 2225 - 2231. Abstract The system CdM - NaOH - H 0 was studied by the solubil y the elecirical conduc- tivity, the potenhometric methods and the methods of light extinction and of precipi- tate volume measurement. It was established that the reaction between CdSO)+ and NaOH in a diluted aqueous solution proceeds with the formation first of 4Cd(OH)2-CdSN and of Card 1/2 USSR/Inorganic Chemistry. Complex Compounds. C Abs Jour Ref Zhur - Khimiya, No. 81 19579 26493. 1 Cd(OH)2 after that. Considering the ob- tained data, the conclusion was arrived at that the method of light extinction is appli- cable to the quantitative determination of Cd '~_ by titration with an alkali solution. Card 2/2 TANANAYEV, I.V.; ULIYANOV, A.I. Physicochemleml analysis of systems important in analytical chqmistry. Part 25. Study of the caprocIpitation of alkali metal sulfittes vIth BaSO4. Trudy Kem.an^l.khIm. 7:3-20 '56 . (MLRA 9:9) I.Institut obahch4v I nearganichoskoy khtaii insul. N.S.KurnRkova AN SSSR. (Sulfates) TANANAYEV, 1. V. "The possibility of separating francium from cosium.9 report presented at The Use or Radioactive Isotopes in Analytical Chemistry. Conference in Moscow, 2-4 Doe 1957 --- MR. 1958. No. 2. (&uthor Rodin. S. S.) TANARATIT. I.T.j LITITA, N.I. Nood"lum forroclaalde*. Xhia.refteelose no*3:28-0 157o (MLRA 10:8) I.Inatitut obehohey i neorganichasker Wall in. N.5. gurnakova Akad sli nark SSSR. (Noodystum forrqcyanldoo) 137-58-2-4398 Translation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 2, p 300 (USSR) AUTHORS: Tananayev, 1. V, Bausova, N.V. TITLE: Gallium Ferrocyanides and Their Analytical Significance (For- rotsianidy galliya i ikh analiticheskoye znacheniye) PERIODICAL: Khimiya redkikh elementov, Nr 3, 1957, pp 41-56 ABSTRACT: Tests of solubility, light absorption, electrical conductivity, and e. m. f. were used to study the reaction 'of Ga, ions with~ the ferrocyanides of Li, K, and Na. Iry all the systems studied it was found that Ga 4 [ Fe(CN)61 3 forms. Whenever surplus K4 [ Fe(CN)61 and Na4 (Fe(CN)61 were present, formation was observed of mixed salts of NaGa [ Fe(CN)61 (the HZO dissociat- ing) and KGa [Fe(CN)6 j (soluble congruently). On the basis of the data obtained, new methods are proposed for determining Ga. Potentiometric titration with an Na4 [Fe(CN)61 solution made Possible the determination of Ga in the presence of an Al content 100 times greater. With Na4 [ Fe(CN)6 I in a 100-cc solution it was possible to determine 0.2-30 mg of Ga by means /Z of the heterodyne method. Amperometric titration with a K4 Card I [ Fe(CN)6 I solution could be carried out in the presence of 137-58-2-4398 Gallium Ferrocyanides and Their Analytical Significance large quantities of Al, since the presence of the Al was reflected only in the slope of the titration curve. N.G. 1. GalUm forrocyanUes-Analysis Ca rd 2/2 -7;~&,9=j~;~rvl P'll, N, R.N.; un"TIT. I.T. 40-6#~ Study of the reaction of indi= hydroxide forvatl*v. Kbisiveft. ales. no.3:73-86 '37. (nu 10:8) Llustitut obsbaboy I nearganicheskoy Wall In. N.S. Kuruskove Akmdsull nauk SSSR- (Indium hydroxideO 1. ~- ~ ~ ~- -7- . ~ -~ -:., ~~ ~ -- II . I' . .- . . I.--- -.- I i 1. .- l M i IBM 4 . -~ ~ M Em. lowm9mvp-i M~-- I-V iMEMAM mse4m. sm~ AUTHOR- -I!=-!N ~~IIVZ 62-12-1/20 TITLE: New Data Concerning the Chemistry of Some Rare Elements (Novyye dannyye o khImii nekotor7kh redkikh elementov) Lecture Delivered at the Meeting of the Department of Chemical Sciences of the AN USSR on October 31, 1957 (Doklad na, sessii otdeleniya khimichaskikh nauk Ucademii nauk SSSR 31 oktyabrya 19579). PMODICALt Izvestiya AN SSSR Otdolen%e Khimicheakikh Nauk, 1957, Ur 12, Pp. 1421-1428 (USSR) ABSTRACTz Among the questions of greatest interest at present in physical cherr- Istry there is also that of the elaboration of now reactions of rare alkaline metals. Nearly all of them form practically Unsoluble raixed ferrocyanides Ath alkaline metals (see table 1). Wm solving the problem concerning easier methods for the production of a partiou- larl,y pure liquid fluorine hydrogen and fluorine, the fluorine com- pounds of lithium, zubiaium and cesium vin attain particular im- portance. The lecture contains new data concerning the composition and the physical properties of various compounds of some rare ele- ments. Among other tbings, also a survey is given of the insoluble Care 1/2 mixed ferrocyanides, camposed of various metals with lithium, New Data Concerning the Chemistry of Some Rare Elements. 62-1, 2-1120 Lecture Delivered at the Keeting of the Department of Chemical Sciences of the AN USSR on October 31, 1957' rubidium and cesium. In this connection the lecturer recommends a number of now reagent precipitations. A rule governing the modifi- cation of the composition of mixed ferrocvanides containing rare a3laline earth metals ~ms determined. Further, new details are given concerning the compositicn ana aurability of fluorides, oxa- lates, tartrates, and other compounds of gallium, indium, zirconium and germanium. There are 2 tables. ASSOCIATICK: Institute for General eM Inorganic Chemistry imeni H.S.Kurnakov AN USSR (Institut obshchey i neorganicheskoy khimii im. N.S.Kurnakova Akaaemii nauk SSSR). SUBMITTED: October 9, 1957 AVAILABLE: Library of Congress Card 2/2 1. Chemical engineering-Conference 2. Flourine-Liquid 3. Flourine Wrogen-Liquid 4. Lithium 5. Rubium AmIlOR: Tananaev, I'.V., Seifer, G.B.9 and Glusbkovat M.A. 560 Tit=: Ferrocyanides of Trivalent Iron (0 Ferrotsianidakh T-rekhvalent- novo Zheleza.) PERIODICAL: "Zhurnal Neorganicheskoy Khimii", (Journal of Inorganic Chemistry Vol,II, No'.29 pp.268-280. (U.S.S.R.) t,(s-7 ABSTRACT: In this investigation the behaviour of the cyanides of trivalent iron in systems with lithium? sodiump potassiumt rabidium and caesium has b.een studied by two methods: that of solubility and . that of e m.f. measurement. The equilibrium solutions obtained in the solubility experiments were used for the parallel study o the systems by the e.m.f. method using a platinum electrode with a saturated calomel electrode-,; From the results obtained conclu sions are drawn on the general'behaviour of trivalent iron ions in and ferrocyanides of different alkali metals when present to- gether in systems. Differences due to the nature of the individ ual alkali metals were also noted. The tendencyl to all the alk 1i metals was the formation of mixed ferrocyanides of iron al- though the nature of these compounds was very different for the different alkali tal The-stoichiometrically normal iron ferrocyanide Fe4X(Cn%J3 is not formed with any of the systemE studied. On incomplete precipitation of iron it ith r becomes j e e adsorbed (systems with Li4[Fe (0n)6],, and Na4 [Fe On) 611 ), or remaJ Card 1/2 Ferrocyanides of Trivalent Iron (Cont.) 560 in excess (systems with K4 (Bb Cs4)[ke(Cn)61 ), an effect evident- ly due to coprecipitation of thle alkali met&l. N(On)61 Card 2/2 enters the precipitate as soon as the precipitat- M4 ion of-iron is comDlete even with lithium and sodiud. This is ~9'jj] composition M6Fe2 Tie 6-13- Although the continued adsorption of X4[Fe(Cn)g] by the precipitate makes the interpretation of thd experiffiental curves difficult the possibility of the formation of new incongruently soluble mixed salts of definite composition is not excluded. especially pronounced with rubidium and caesium. The contents of alkali metal in tile precipitate increased according to the series K - Rb - Cs. It appears that with potassium, rubidium and caesium mixed salts of the simplest type M FeTe LCn)K1 are formed at first. It is very likely that the salts; 1E1bFeLFe(On) :land CsFe rle(Cn)G~ do to form a second existp but they react easily with M4 [Fe mixed salt of the Ch ferrocyanides inorganic prototypes of ion-exchange resins. As regards the strength of the bond in mixed ferrocyanides of iron and alkali metalsy the latter can be arranged in the usual series with caesium having the greater strength and lithium the least. Apparently in the mixed salts the alkali metals can mutual replace each other according to the above order'. From this point view mixed of trivalent iron can be considered as 14 Figures and 5 Tables. des O-L jrh rlvan3- 0 ec=~bWIXIY rr .1 A,! Iti%e e, ~ai'lila i.UID aui: 01 an& 'Maj. ium - St rLt, tsi (17 FW--- ro NPIY -to Tpjj~ R -&es Of calcl e ?eT WMI sh 'FeTTOOI uagreSD30~ I Blue EL.. Uixecl With a OIL Tall-3-y itTo t5ieo arual 1 (30' T'aalliuz 3,j&aw- Card 1/2 I.UO of eva -Pos"ble - 1~. ) ~ 1~,- f -FerTotSial all tsi- . W-ItbL jr~o a d)eT 0,,Iiuz tioll agjoa.t. icbLef ,Tge 8, Uva f tb, )T 1-40A -V -- 5 tiga P111 ~-"- - -n& as -jaes 0iuves t,,, Ter: Iq !A 0 Ci 0 86 roclau f OT jae t oo=avul 0 0 f elub f eT ,stems tb6l ,b5e(, forme& 'by t )-Cy0-preseutems tb~e 0 0VU&S jae als' -Vale],., tbe ,with of colop f otbLer t,,,t tue the Sy 5 b:ysi-co types ,i.&es 0 flay &if f erent iA by tbA 1) ocyaui .rr 0 cy Obilitl (I f eTT si-uv ttLe f e . .,,h a '&be i SOW ST) e.U i31 Saoal- t,,Id:y 0 U62 t Sixe ag(Le VeTe cbLO5. tbueluf ttLe. 6 S Z: LUI& th% t VitIrL IU 0 f 01 eUtec ts -it Vas eXcel TIIj f rro TeS ful d6 osition -res bp&. forme I cati.013. -Fe veTe- 3.e. C010P lsi,%e frolD of ase& ~ 6 7- TV401 OUS sis ~Cg) salt Of ti ility j~UCTQ Ca i au& 3- T C~ 901UP tas 4 lite'r CtLelt Tai%e The I the tip e , ,,6,j Ise A 'T 10~ seCOU& S. - 0tbLe of a Isolatea- the o, ,04;, 3o T-rol a-rth f 0-r wbich -was au& ? % &ata I-e al (C%)616 isou 0 estIS L7e ,,,; of taa eiU6 iaes Of eu*- C. st.rOVLtj-i3z C omp f,~ 0 ey au res aille cyau .00 to at 25 0 C & f e jrL the 'P &, ve Obt esi it-re . ,j%e ei3De& covapollu jua 3 %61/3- sitiou 0 se o'bt VA 10- tbLe COOP 83~d. tb0o tbal,- ou . ,,etals as,1060'as 61W-all - t the t1aa 561 Mixed Ferrocyanides of Thalli-Um. I. Mixed Ferrocyan des of "hallium with magnesium, Calcium and Strontium (Cont.) resembij them: this is indicate b 'y the fact that they all belong io the single type 112E Fe (CN) ] ' As regards solu- bility in water, the Compounds of tWi'i~m considered most closely resemble the corresponding rubidium and caesium compounds. There are 3 figures and 3 tables. Received on 22nd October, 1956. Mere are 7 referencesp one of them Russian. Card 2/2 -T ,O~-N AUTHORS: Tananayev, I, V. and Levina, M. 1. 78-3-12/35 TITLE: Some Data on the Structure of Mixed Ferrocyanides. (Nekotoryr dannyp o strqenii smeshannykh ferrotsianidov). PERIODICAL: Zhurnal Neorpnicheskoy Xhimii, 1957, Vol.II, Nr.3, pp.'576-585. (USSR) ABSTRAGT: The addition of silver nitrate to an aqueous suspension of any mixed forrocyanide leads to the displacement by the silver ions of both cations of the mixed salt from the precipitate into the solution. If the silver nitrate is added gradually and the concentration of the cations of the mixed salt in the solution is determined on each addition, the order and degree of replacement of the heavy and alkali metals of the mixed salt by silver can be found. This is the basis of the method used in the present investigation, except that the process was followed by determining the silver concentration in the su ernatent liquid by measuring its radioactivity. AgYlO was used as the tracer. The following compounds Card 1/2 were studied: X4Ni4[F8(CN)6]3 and 78-3-12/35 Some Data on the Structure of Mixed Ferrocyanides. 5G02[Fe (CN) 6] X4 LFe (GN) jand also N12[Fe(GN)J. The method used enabled the relative strength of the bonds of the metals in the outer sphere of mixed ferrocyanides with ferrocyanide ions to be found, and it is suggested that this should influence the way in which the chemical formulae of metal mixed ferrocyanides should be written. Based on a study of the conditions for the formation of KAg [Fe(GN)61 analytical methods are recommended for the determination of small quantities of silver and ferroeyanide in solutions radiometrically with the use of Ag1lO and also potentiometrically. There are 7 figures, 13 tables, and 11 references, a of which are Slavic. SUBMITTED: October 27, 1956. AVAILABLE: Library QfCongress. Card 2/2 78-3-13/35 AUTHORS: Tananayev, I* V. and Glushkova, M. A* -TITLE: Mixed Ferrocyanides of Thallium. (0 smeshannykh ferrotsianidakh talliya.) II. Mixed Ferrocyanides of Thallium with Copper and Nickel. (II. Smeshannyye ferrotsianidy talliya s medlyu i nikelem.) PERIODICAL: Zhurnal Neor anicheakoy Xhimil,, 1957, Vol.II, Nr.3., pp. 586-593. fUS3R) ABSTRACT: This Investigation had as its aim to fill the gap In the literature on the nature of the reaction of copper and nickel ions with ferrocyanide ions in the presence of thallium.. The potential importance of such an investigation is that the information it provided will be used to decide whether thallium in very low con- centration could be isolated from solutions containing certain non-ferrous metal:s. Ordinary methods of chemical analysis were used in thifi investigation to study systems ensisting of Ti*p 34* (E = Gu, Ni) and [Fe(CN)6] . It is concluded that thu slightly Card 1/2 soluble mixed ferroeyanide of thallium and copper, Mixed Ferrocyanides of Thallium. II. 78-3-13/35 T12CU2[Fe(CN)612, is formed from the appropriate ions for the whole range of concentrations dealt with. The solubility of the Rompound formed as a result of the displacement of Gu4'~'ions by Tl* ions from a precipitate Of Cu2[Fe(CN)6] was found to be so small that a suspension of this precipitate can be used to separate small quantities of thallium, from solution. The mixed nit T14N14[F6(GN)613 was formed by the reaction of Ti with N12+ and [Fe(CN) 4- Ions.. T.ho.solubility of !~90 precipitate of this sqat, formea by 'tile reaction of TI Ions with a precipitate of nickel ferrocyanide is so low that it, too, can be used for separating small quantities of thallium from solution. There are 4 figures, 7 tables, and 6 references 2 of which are Slavic.. SUBMITTED: October 26, 1956. AVAILABLE: Library of Congress. Card 2/2 V _7- 78-3-14/35 AUTHORS: Tananayev, 1. V. and Glushkova, M, A, TITLE: FerrocyanideB of Thallium. (0 Ferrotsianidakh talliya.) III. Mixed fGrrocyanides of thallium with uranyl. (III. SmesharrWye ferrotsianidy talliya s uranilom.) PERIODICAL: Zhurnal Neorganicheskoy.Khimii, 1957, Vol.I1, Nr*3, pp. 594-599. (USSR) ABSTRACT: An account is given of the study of the solubility of the system TM~902(N03)2 _L14D?G(GN)61-H2O at 25'G. Solutions of these compounds were used, the molarity of the thallium nitrate solution being determined by precipitating thallium as chromate, that of lithium cyanide by titration of a known volume of the original solution by potassium manganate in sulphuric acid using crystal violet as an indicator. The concentration of thuiranium salt was determined by precipitation of (U02)2 in the presence of carbonate-free ammonium nitrate, the precipitate after washing and calcining Gard 1/2 being weighed as U3% . No formation waS of F;rrocyanides of Thallium. 111. 78-3-14/35 the simple ferrocyanide of uranyl, the reaction of the ions leading to the formation of two mixed ferrocyanides of thallium. and uranium with the compositions: T12(UO2)3[Fe(GN)612 and T14(U02)4[Fe(CN)6]3. All the alkaline metals and thallium can be arranged in the following series with respect to their ability to displace [U02324' ions from the precipitate of (U02)2 [Fe(ON)61 : T1 is jX Go > Rb >P K > Na >, Li, from which it follows that suspensions of this precipitate can be used for separating small quantities of thallium. from solution. There-are 2 figures, 6 tables, and 5 references 2 of which are Slavic. SUBMITTED: November 19, 1956. AVAIIABLE: Library of Congress. Gard 2/2 -T-A AUTHORS: Tananayev, I. V. and Seyfer, G. B. TITLE: Mixed Ferrocyanides of Calcium with Rubidium and Caesium. (Osmeshannykh forrotsianidakh kalltsiya a rubidiyem i teeziyam.) PERIODICAL: Zhurnal Neor anicheskoy Xhimii, 1957, Vol.II, Nr.3, pp, 600-603. fUSSR) ABSTRACT: All methods previously proposed for utilizing the reaction of the formation of mixed calcium ferrocyanides have lacked a proper experimental foundation, and thua lead only to qualitative results. The provision of experimental data sufficiently accurate and full to enable quantitative results to be obtained is the object of the present investigation. Solubilit ethods were used to study the systems in the MC1- Ca2 9(CN)6]-H20, where N - Rb'O' or Gs+, which enabled the influence of excess of the components on the composition of the compound formed to be followed. The experimental method used has been previously described7. For the Card...1/3 rubidium system it was found that the ratio of Mixed Ferroeyanides of Calcium with Rubidium and Caesium. 78-3-15/35 [pe(cN)614- : Rb+ and of [Fe(CN)6]4- : Ga2+ do not depend on the ratio of either component in the mixture, that is the precipitate obtained is constant in composition. The mixed ferrocyanide obtained is represented by the formula Rb2()R[Fe(CN)6]. Similar results were obtained for the caesium system, the precipitate here being 0320a[Fe(CN)6]. Although results obtained suggested that the formation of the mixed ferrocyanides of calcium could be used for the gravi- metric determination of rubidium. and caesium, it was found that this could only be done with perfectly pure, solutions, since the solubility of the precipitates formed is very strongly affected by the ionic strength of the solution; further, the small difference in the solubilities of the rubidium and caeaium salts makes it unlikely that the reaction could be used for separating rubldium and caesium. There are 2 figures, 2 tables, Gard 2/3 and 8 references 2 of which are Slavic. Mixed Ferroeyanides of Calcium with Rubidium and Caesium. ASSOCIATION: Institute of General and Inorganic Chemistry imeni N. a. Kurnakov;. of the Academy of Sciences of the USSR. (Institut obahchey.ineorganichesko-y khimii im. N.8, Kurnakova AN 383 R.) SUBMITTEDs October 27, 1956. AVATr.Agj&: Library of Congress. Card 3/3 0l InvLeory v958P wivical scar- -je - SO -L3 - 13 3 Aj3jor 'tiou or NVAO -%061 1365. -,Te ~,4 NIX 10t_ 19519 tvOts,vi '.U" * OVI&I S. imeOT69A * acts 5. j!!jWj;,;w I a so r. Set& 90 ~f Lb veTgo~o- OL t -9T0 uteTs Olu 100 a UL UO olm jdo &OCS e To, OA& :eu Of sm~o ,O;Se7 SICK )1101 Vs coll( ZIOU 4_~D~' o-r S Se -7 O'Ce C&CP b,T Olt .,Otetse 10 ";-L~~& 6,,,Cy-e -to Oil . tue -10 Or Av~tvsx tAe 1 -7 Ole 103%,&e 60i ,,Se tue CiAs fOT%,5- .01r6PO-,.jelc- e:o ,tale Sttwvl %,Ae 4_a Se 'lie -.7reso vetO ,00 r lie vp '611a -Geeol":,g~0131-'fffln, COX& - - - --------------------- U BWFhY8lc&l Abs jo,,r, &Mrna- Solutifts' Theory Of A,144 &tMjYvL ' 'V0 2, 1958, 3945. and Bases. Olu I 80-lut:Ecms and Al( e. 2 f Al in Presezice Of 203) solutlons Can be used fOr deterldnaticm Card 2/2 TARARAM, I.Y.: VINOGRADOVA. A.D. , - Gompo-sition and stability of fluoRluminates in solutions. Zhur. neorg. khim. 2 10:2415-2467 0 157. (MIRA 11:3) (Fluoaluminates) (Solution (Chemistryv TANAMAYEV,,I.V.-, IONOTA, Ye.A. Zirconium forrocyanides. Part 1: Interaction of ZrOC12 with 11&41]Pe(CN)61 and %[J'~(CN)�1 in aqueous solutions. Zhur. neorg. khtm'. 2 10:2468-2474 0 57. (MIRA 11-3) 1. Institut obahchey i neorganicheekoy khimil Im. N-S.Kurnakova AN SSSR. (Zirconium compounds) (Sodium ferrocynnide) (Potassium forrocynnide) TANANAM. 1. V. -. OWSHIODVA, N.A. Thallium forrocynnides. Part 4: Mixed forrocynnides of tbpklliuo with lanthanum and cerium. Zhur. neorg. khis. 2 lo:z474-2482 0 157. (MIU 11:3) (Thallium ferrocynnide) (Lanthanum) (Cerium) TANANA I LIBOOMLIDAR, M.Ya. Investigating the formation of nickel hydroxide In aqueous solutions. Zhur, neorg, kh1n, 2 no.12.-2700-2706 D '57. (MIRA-11:2) 1, Hoskovskly inzbenerno-fizicheekly Institut, Rafedra, khimit. (Nickel hydroxide) jC~19NAL OF ANILYTICAl. CF,-t,%GSTRY vc"~ U1, Nr 4, 19517 .11 fusutuw AUTFORS; Tananayev, I. V., Shcheglova, Ye. P. 75-6-11-23 TITLE. Investigationer of the System BeSO 112OH-H 0 and its Ana2v-ticz-l 4-~ 2 Application (Issledovaniye sistemY, BeSOeaOH'420 ' yeye ara]'i U- cheskoye primeneniye). PERIODICAL: Zhurnal Analiticheskoy Khimii, 1957, Vol- 12, 'Nr 6, pp. 671-676 (USSR).* ABSTRACT! The solubility in the system BeSO 47 11aOH-H.O at 250C was irr-restiga= ted. It was stated hereby that with the formation of Be(OH)2 firstj szoluble basic salt-T, are fermed and then follows the forma-V-ion of insoluble basic salts of variable composition. Beryllium hyd-~oxide dissolves in alkaline lye-solution when the content of alkaline lyE attains 0,025 mol. per liter. A combined alkali-oxy-quinolate r.',ethoe is preferred for the determination of beryllium in the presence of larger quantities of aluminum. The complete separation of beryllilr and alirninum. on the strength of the different solubility of their hydroxides in alkaline lyes does not lead to a quantitative separa- tion.of aluminum and beryllium. There are 1 figure, 3 tables., and 8 references, 4 of which are Sla-* Card 4/2 VIC. Investigations of the System BeSO 4-'TaOff-H2 0 and its Analytical 75-6--1/2.17 Application. ASSOCIATION: Mosew Institute or Engineiering Physics (Moskmkiy inshenern6-fizicheekiyIinatitui). SUBMITTED: January 4, 19-iZ-., AVAILABLE: Library of Congress. 1. Chemistry-USSR 2. Beryllium hydroxide-Solubility 3. Alkaline lye solution-Applications 4. Aluminum-Beryllium content-Determination Card 2/2 5W AUTHORSt Vasil*yev, V. P., Korableva, V. D.p SOV/153-58-3-30/30 Yatsimirskiy, K. B. TITLEs Conference Discussion on the Methods of Investigating the Complex Formation in Solutions (Boveshohaniye-diskussiya po metodam izueheniya komplaksoobrazoveniya Y rastyorakh) PERIODICALt Izvestiya vysshikh uohobnykh zavedeniy. Xhimiya i khimiohaskaya t*khnologiys,, 1958, Nr 3, PP 173 - 174 (USSR) ABSTRACTs From February 18 to 21, 195E1 a conference discussion took place at the town of Ivanovo; it dealt with the subjects mentioned in the title. It was called on a decision of the VIIth All-Union Conference on the Chemistry of Complex Formations. More than 200 persons attended the conference, among them 103 delegates from various towns of the USSR. At the conference methods of determining the composition of the complexes in solutions were discussed, as well as the methods of calculating the instability constants according to experimental data and problems concerning the influence of the solvent upon the processes of complex formation. I. I. Chernyayev, Member, Academy of Sciences, USSR, stressed Card 1/16 in his inaugural lecture the great importance and actuality Conference Discussion on the Methods of SOV/153-58-3-30/30 Investigating the Complex Formation in Solutions of the problems to be dealt with, and wished the conference all the best in its work. I. V. Tananayev, on behalf of the Orgkomitet (organization Committee) held a lecture on: "The Method of Determining the Composition of Compounds Formed in Solutions". In his lecture, V. N# Tolmachev dealt with the problem of the graphical interpretation of the method by Ostromyslenskiy-Zhob. It was proved that this method can also be used in such cases where the equilibrium of complex formation was turned complex by the hydrolysis or dimerization of the central ion. In the lecture by L. K. Babko and M. M. Tananayko, "Physical and Chemical Inslysis of the Systems With 3 Colored Complexes in the Solution", the results of a systematic investigation in copper-quinoline-salicylate, as well as in copper-pyridine-salioylate systems by means of the optical method were dealt with. In the lecture by Ya. A. Fialkov the idea of a further investigation of the complex formation processes in solutions was developed. Besides the determination of the composition and stability of the complexei also the physical and chemical properties, the chemical nature Card 2/16 and the structure of the complex compounds must be investi- Conference Discussion on the Methods of BOV/153-58-3-30/30 Investigating the Complex Formatio.n in Solutions gated. The lecture by K. B. Yatsimirsk dealt with the conditions of checking the usefulness of the method of iaomolar series in the determination of the complex composition. To be able to obtain objective results the position of the maximum at various concentrations of the components must be checked. A. K. Babko made several critical remarks concerning the lecture by I. V. Tananayev. He pointed out that such a method of investigation must be chosen that is connected with the characteriatic'propertiee of the system investigated. A. F. Komar' mentioned in his lecture that for the time being the method by Ostromyslenakiy-Zhob is the best for determining the complex composition, and should be employed as often as possible. This demands, however, that all instructions con- cerning this method are strictly obeyed. I. S. Rustafin, L. P. Adamovich and V. I. Kuznetsov took part in the discus- aion. K. B. Yatsimirskiy proved in his lecture "Hydrolytic EquilibFfa an the Polymerization in Solutions" that, if the hydrolysis products are polymerized, the "inclusion into the complex" and the "formation function" at a constant pH value Card 3/16 are varied with the modification of the total concentration of Conference Discussion on the Methods of SOV/153-58-3-30/30 Investigating the Complex Formation in Solutions the metal. Therefore all those methods may be employed for investigating the polymerization of this type which make the determination of at least one of the two functions mentioned possible. It was proved that the hypotheses on the existence of complexes of the type "nucleus + chain members" can also be founded from the viewpoint of structural concepts: psrticle~ the charge of which does not exceed unity can occur as "chain members". The usefulness of the characterization of areas of existence of pdymers by means of surface diagramss "total concentration of the metal - pH11 was proved as well. I. I. Alekseyeva and K. B. Yatsimirskiy in their lecture "Investiga- tion of the Polymerization of Iso-Poly Acids in Solutions" mentioned experimental results of the investigation of the polymerization in solutions of molybdic acid. The authors proved that especially the molybdic acid within a certain range of the pH values and the concentrations exists as a number of compounds that can be expressed by an overall formul goo4(HMOO4)n-2. In the lecture by N. V. Aksel'rud and V. B. Card 4/16 Spivakovskiy investigation results on basic salts taking into Conference Discussion on the Methods of SOY/153-58-3-30/30 Investigating the Complex Formation in Solutions account the complex formation in solutions by means of the potentiometric method were mentioned for systems with zinc, cadmium and indium. In the evaluation of their results the authors employed the method of the table difference. The calculation of the consecutive constants was carried out according to the interpolation formula by Newton. M. A. Chepelevtskiy held a lecture on "pH Measurement Method of the Solutions in Combination With t~q System Analysis of the Solubility Diagram of the System Cu~MHCl - H2 0 in Investiga- ting-Complex Copper Compounds in Saturated Solutions". It was found that the substance at the bottom of the liquid is more basic than the solutions furthermore, the increased acidity of the solution from the viewpoint of the formation of hydroxy-ohloro complexes in the solution'w" explained. V. r. Kuznetsov opened the discussion with his lecture; he pointed 'but'the necessity of utilizing the concepts worked out in the investigations of the polymerization in organic chemistry in the chemistry of polynuclear complexes. A. A. Card 5/16 Grinberg thinks that the new approach of the hydrolysis Conference Discussion on the Methods of SOV/153-58-3-30/30 Investigating the Complex Formation in Solutions investigation as developed by the Scandinavian school is of high value. He also pointed to the necessity of studying the kinetics of the polymerization process and a quantitative determination of the strength of the polymers. A. K. Babko pointed out that the study of the polymer structure was necessary. N. P. K~mar' mentioned in his lecture that the rather widely spread polymerization type according to the scheme "nucleus + chain members" is not obtained in all casei The following scientists took part in the discusBions V. N. Tolmaohev, A. V. Abloy, 1. S. Mustafin, I. V. Tananayev and K. B. Yataimirskiy. A. K. Babko then discussed in his lecturo "Methods of Determining the Dissociation Constant of the Complex Groups in Solutions" the main principles of determini the instability constants. N. P. Komar' discussed in his lecture "Calculation Methods of the Instability Constants of the Complex Compounds According to Experimental Data" the possibilities of using the known calculation methods of the instability constants for various cases of the complex forma- tion in solution. If *several mononiiolear complexes are f orm, Card 6/16 the displacement method by Abegg and Bodlender (completed by Conference Discussion on the Methods of SOV/153-58-3-30/30 Investigating the Complex Formation in Solutions 1. K. Babko) cannot be recommended for the calculation of the instability constant. The leoturer discussed the dis- solution methods of the polynomials proposed by B'yerrum, Leden, Rossoti, Sketchard, Edsolloy and other authors. The constants calculated in this way are not very accurate. It was proved that the method of successive approximations can lead to wrong conclusions as to the chemical processes taking place in the system investigated. The most probable value of the physical constants can be obtained by the method of the least squares. B. V. Ptitsyn, Ye. N. Tekster and L. 1. Vinogradova described the determination methods of the instability constants of the -oxalate complexes of niobium, uranium and iron which are based on the investigation of the equilibrium displacement of the complex formation by silver ions. N. X. Bol'shakova, I. V. Tananayev and G. S. Savch6nko held'a lecture on "The Role of the Time Factor in the Investij tion of the Complex Formation". In the discussion on the lectures A. A. Grinberg mentioned that due to the slow adjustment of the equilibria the methods discussed of Card 7/16 determining the instability constants (palladium and cobalt Conference Discussion on the Methods of SOY/153-58-3-30/30 Investigating the Complex Formation in Solutions complexes) can often not be employed. A. V. Ablov pointed out the necessity of devising direct methods of proving the existence of intermediate forms in a step-wise complex forma- tion. K. B. Yatsimirskiy mentioned that the instability constants of slowly dissociating complexes can be calculated from thermochemical data. L. P. Adamovich, A. V. Golub among others took part in the discussion on the lectures. A. K. Babko requested inclusion in the next conference on the chemistry of complex compounds a lecture in which various calculation methods of the instability constants should be discussed by the example of actual cases. This should clarify to which divergencies of the values of the constants dif- ferent methods of evaluating the experimental data can lead. N. P. Komar' stressed that in the determination of the instability (.onstants all chemical equilibria should be taken into account that render complex the complex formation process in the solution, especially the hydrolysis processes of the central ion and the addendum. In the lecture delivered by V. U. Peshkova and A. P. Zozulya "Application of the Distribu- Card 6/16 tion Method to the Investigation of the Stability Constant's Conference Discussion on the Methods of SOV/153-58-3-.30/30 Investigating the Complex Formation in Solutions of Some Thorium Complex Compounds" results obtained from the experimental investigation of the distribution of thorium compounds in the systems: acetylacetone benzene - water, and 2-oxy-1,4,-naphthoquinone - chloroform water were given. From these data the instability constants of the thorium complexes with acetyl-acatone and 2-oxy-1,4-naphthoquinone were calculated. I. V. Tananayev, 0. S. Savchenko and Ye. V. Goncharov held a lecture on the application of the solubility method in the determination of the stability of complex compounds in solutions. In this lecture also other methods of investigating complex formation processes in the solution were discussed (pH measurement, measurement of the optical density, as well as of the heat of mixing). B. D. Berezin held a lecture on the "Application of the Solubility Method in Studying the Phthaloeyan~kne,Complexes of Metals". He used the determined quantitative characteristics of the reaction of the transition of the phthalocyanides of cobalt, nickel, copper and zinc, as well as of the free phthalo- oyanine into the sulfuric acid solution for the theoretical Card 9/16 reasoning, and as an experimental proof of the existence of Conference Discussion on the Methods of SOY/153-58-3-30/30 Investigating the Complex Formation in Solutions ~f-bonds in the complexes investigated. These characteristics also served him as a proof of new electronic formulae of phthalocyanine and its complex derivatives. In the lecture delivered by I. L. Krupatkin on "The Method of the Two Solventi as a Method of Investigating the Formation and Properties of Organic Complexes" it was proved that this method makes it possible to determine the number of complexes formed in the system, their composition and relative stability. V. I. Kuznetsov, A. K. Babko, N. P. Komar', I. S. Mustafin and Ya. I. Tur'yan took part in this discussion. In the lecture delivered by A. A. Grinberg and S. P. Kiseleva on the complex palladium compounds (II) with a coordination number above four it was proved that in the case of a farge chlorine and bromine ion excess complexes with the coordination number 5 are formed. The instability constants of these complexes were estimated. L. P. Adamovich mentioned a new manipulation in the spectrophotometric investigation of the complex com- pounds that can be used in systems with the formation (or predomination) of one single complex. This method makes it Card 10/16' possible to determine the composition and instability constan, Conference Discussion on the Methods of SOY/153-58-3-30/30 Investigating the Complex Formation in Solutions of the complex. In the lecture delivered by K. B. Yatsimirskiy and V. D. Korableva the application of the theory of crystal- line fields for the determination of the composition and structure of the chloride complexes of cobalt, nickel and copper according to the absorption spectra of these complexes was discussed. It was proved that in a hydrochloric acid concentration above 5 mole/liter in the solution there exists an equilibrium between the tetrahedric and octahedric form of the cobalt chloro complexes. Yu. P. Nazarenko proved in his lecture "The Application of Radioactive Isotopes in the Investigation of the Solvation Equilibrium in Solutions of Complex Compounds" the possibility of using data on the isotope exchange to clarify the structure of the complex and mechanism of the hydration processes. V. Klimov mentioned in his lecture the use of radioactive isotopes in the study of tin and antimony oomplexes in non-aqueous solutions. A. V. Ablov, V. N. Tolmachev, V. I. Kuznetsov and A. 1. Golub took part in the discussion of the lectures. The usefulness of employing the theory of the crystalline fields in explaining Card 11/16 the results obtained from the absorption spectra of the com- Conference Discussion on the Methods of SOY/153-58-3-30/30 Investigating the Complex Formation in Solutions plex compounds was stressed. In the lecture delivered by I. A. Shek on "The Investigation of the Complex Formation by the Method of the Dielectric Permeability and the Polariza- tion" the principles of the methods mentioned were presented. This method was employed for investigating the compounds of the type of the "affiliation" products. The lecture delivered by I. A. Shek and Ye. Ye. Kriss "Employing the Method of the Dielectric Constant for Investigating Complex Compounds of the Type of Crystal Solvates in Solutions"-dealt with the investigation of the solvates of lanthanum and cerium chlorides with ketones, as well as with the study of the compounds formed in heterogeneous systems with tributyl phosphate and nitric acid. V. F. Toropovs. gave in her lecture "The Polaro- graphic Method of Investigating the Complex Formation in Solutions" a survey of the applications of the polarographic method in the study of the complex compounds, and illustrated several fine characteristic features of this method. In the lecture delivered by T. N. Sumarokova "The Cryoscopic Method of Investigating the Complex Formation Reactions" a survey of Card 12/16 the possibilities of the cryoscopic method was given, and its GoAference Discussion on the Methods of SOY/153-58-3.-30/30 In7eatigating the Complex Formation in Solutions applicability in the study of several complex compounds of stannic chloride with organic substances was proved. A. X. Golub described the results of his investigations of thio- cyanate complexes of several metals. A vivid discussion took place on the lectures hold. Y&. A. Fialkov. and Yu. Ya. Fialkoy considered the cryoscopic method of investigating complex compounds to be of considerable value. K. B. Yatsimirskiy pointed out that the publication of the surveys on individual methods of investigating the complex formation reactions would be desired; this concerns especially the polarographic method. The oryoscopio method should be brought to a level that makes the calculation of the equilibrium constants of the processes to be investigated possible. The problem of the method of evaluating the.oxperimental results becomes more and more important. Many scientists use the instability constants without taking into account the way in which they had been obtained. The calculation methods employed by 1. M. Golub are one stop back, as compared to those employed at present. In his lecture N. P. Komar' Card 13/16 pointed out the extremely great importance of the mathematical Conference Discussion on the Methods of SOY/153-58-3-30/30 Investigating the Complex Formation in Solutions evaluation of the results obtained, as well as of the plotting of-curves. 1. K. Babko suggested belecting one or two systems that are experimentally well investigated, and to evaluate the results obtained according to different methods so that it in possible to check and evaluate them. Ya. 1. Tur'yan took part in the discussion. Ya. A. Fialkoy discussed in his lecture "The Effect of the Solvent on the Complex Formation Process as Vell as on the State of Equilibrium in the Solutions of Complex Compounds" the influence exerted by the solvents upon the molecular state, upon the solvation of the system components, upon the stabilization of the complexes formed in the system, upon the step-wise dissociation of the complexes and upon a number of other processes. The influence exercised by the dielectric constant upon the complex formation process was discussed. It was concluded that a direct relation does not exist, and that the chemical nature of the solvent must be taken into account. A. V. Abloy and L. V. Nazarova held a lecture on "The Spectroscopic Investigation of Nickel Cobalt 'Pyridinates' in Various Solvents". The instability constants Card 14/16 of the complexes were determined and it was proved that the Conference Discussion on the Methods of SOV/153-58-3-30/30 Investigating the Complex Formation in Solutions stability of the lpyridinates' is changed in dependence on the solvent. Y&. I. Tur'yan in his lecture "The Influence of the Bolvent Upon the Composition and Stability of Complex Ions" discussed the polarographic investigation method of the chloride and thiocyanate complexes of lead in aqueous ethanol solutions at different content of the non-aqueous solvent and at a constant ionic strength. A step-wise character of the complex formation was found as well as the instability constants of the complexes. The influence of the dielectric constant of the solution on the stability of the investifated complexes was proved. In the lecture by V. P. Vasil yev on the "Investigation of Aquo Complexes in Mixed Solvents" the main attention was devoted to the neces- sity, of the qualitative recording of the dolvation effects in the complex formation. The applicability of the pol&ro- graphic method in the determination of the composition and stability of the &quo complexes in mixed solvents was proved and experimental material on the thermodynamics of the dissociation of the cadmium-aquo complexes in aqueous ethanol Card 15116 solutions was mentioned. V. N. Tolmachey, V. 1. Kuznetsov Conference Discussion on the Methods of sov/153-58-3-30/30 Investigating the Complex Formation in Solutions and I. V. Tananayev stressed in their lectures the necessity of a more complete and general investigation of the solvation processes. 1. K. Babko and A. M. Golub pointed out the great importance of the investigations of the complex forma- tion equilibria in non-aqueous solutions, and made several critical comments on the lecture-by Ya. 1. Tur"yan. The following scientists took part in this discussioni L. P. Adamovich, 0. 1. Khotayanovskiy, A. P. Moskvin and A. G. Mustakhoy. At the final meeting of the~conference A. A. Grinberg, Corresponding Member, AS TISSR, said in his speech that such a conference was very urgent. A detailed discus- sion of the determination methods of the composition of the complexes, as well as of the method used in the study of the quantitative characteristics of the stepwise complex forma- tion was extremely useful for all who attended this conference, Card 16/16 USCM-DC-60976 V/ AUTHORS: Tvnanayev, IL. VY. , Petushkova, S. E. , 7-r-2130 ShpirTe_v_a,_6. 'V TITLE: On the Preparation of Water-Free Lithium Iodide (0 poluchenii bezvodno6ro yodistogo lit-iya) PERIODICAL: Zhurnal Neorganicheskoy Khimii, 1958, Vol 3 . Ur 5, PP 1071-1074 (USSR) ABSTRACT: Various methods for the preparation of lithium iodide were tooted and are here described: I..-Preparatiorl of lithiwa iodide by the application of organic reaCents, 2. Immediate interaction between lithium and iodine, 3. Dehydration of lithium iodide in a HJ-current at 3000C, 4. Dehydration of lithium iodide melts in a vacuum. All the above-m6ntioned methods gave unsatisfactory results. In % apecial4r constructed vacuum destillation apparatus) water-free lithium iodide was produced by heating its watery salts in a vacuum at 600-850cC and at a pressure of 0,01 Hg. The water-free lithium iodide is highly hygro- Card 1/2 scopic and decomposes under the influence of light. On the Preparation of Water-Free Lithium Iodide 78-3-5-2/39 There are 1 figure and 5 references, 5 of which are Soviet. SUBMITTED: May 21, 1957 AVAILABLE: Library of ConUre3s 1, LAM= iodide- FmIaraticn-Teat reaults Card 2/2 ,'47HORS: I. -.-VBokmellder, M. Ya. 78-3-6-1/30 TITLE: InvestiCations of the Reaction of the Production of Zircorium Hydroxide (Issledovaniye reaktsii obrazovaniya gidrookisi tsirkoniya) PERIODICAL: Zhurnal Neorganicheskoy Khimii, 1958, Vol. 3, Nr 6, pp. 1273 - 1260 (USSR ) ABSTRACT: In the present paper the process of formation of zirconium hydroxide in the interaction between diluted solutions of zirconium sulfate and zirconium oxichloride with soda lye is investigated. The precipitation of zirconium hydroxide was performed by means of the physico-chemical analyses, especially by the methods of the solubility determination, the p H-deter- minationg the determination of the electric conductivity and of the volume of the zirconium hydroxide precipitations. It was found in the investigations of the system Zr(so 4 )2_11a011-H20 that the reaction of zirconium sulfate with soda lye takes place in three staCes. First, soluble, basic salt 3Zr(SO 4)2 Zr(OH)4 Card-1/2 forms, then the basic salt of the composition (ZrO.011)30 4 78-3-6-1/3o InvestiCations of the Reaction of the Production of Zirconium Hydroxide precipitates which at further addition of alkali hydroxide passes into pure zirconium hydroxide.In the system ZrOCI 2-NaOH-H 20 the formation of zirconiun hydroxide equally takes place in three stages. First, soluble basic salt ZrO(OH)Cjl forms, then the precipitation of the unstable basic salt 7ZrO(OH2 )ZrOO12precipitates which furthermore passe-s into the hydroxide form under the action of NaOH. The zirconium hydr9xide precipitations adsorb considerable quantities of alkalies from the solution, which fact corresponds to the amphoteric character of zirconium hydroxide. There are 12 figures, 2 tables Iand 21 references, 5 of which are 9oviet. SUBMITTED- May 21, 1957 AVAILABLE: Library of CongTess Card 2/2 1. Zirconium hydroxide--Production 2. Chemical reactions--Analysis AUTHORS: Tananayev, 1. V., Leyifna, M. 1. SOV/78-"-9-8/78 TITLE: On Uranyl Ferrocyanides (0 ferrotsianidakh uranila) PERIODICAL: Zhurnal neorganicheskoy khimii, 1956, Vol 3, Nr 9, pp 2045-2052 (USSR) ABSTRACT: The interaction in an aqueous medium in the system UO 2(NO3)2 - M4 [Fe(CN)6] - H 20 was investigated, wheiehl denotes Li ' Na, K, Rb and ds. The investigations were carried out by determining the solubilityi. by potentiometric determination, and by r -ecordin the absorption spectrum. In the system UO (NO 3 )2 -Li 4[Fe(CN) 61 H 0 the normal uranyl ferrocyanide (U0 Fe(CN was eliminate 2 2) 2t], )6] as solid phase. Also in the system UO 2(NO 3)2 -Na4[Fe(CN) 6] - H20 only normal uranyl ferrocyanide is formed. When adding a surpluf of LiR and NaR colloidal solutions are formed. In the systems with M Fe(CN) , where M denotes K, Rb, Cs, solid phases of th( 41 61 type M 4(U0 2) 4 [Fe (CN) 6j 3' as well as the solid intermediate phas, Card 1/2 of the type M 2(UO2)3 LFe(r.N) 6J3 are formed. In the system with On Uranyl Ferrocyanides SOV/78-3-9-8/38 K [Fe(CN)~ in the presence of a surplus of the ion Fe(CN) 4- 4 11 6] and K, ~-S% K SO the compound K Fe is formed. 2 4 12(U02)8 11 (CN)617 There are 4 figures, 4 tables, and 12 references, 7 of which are Soviet. SUBMITTED: November 29, 1957 Card 2/2 AUTHORS: -Jaaaa~~~~~vduyevskaya, K. A. SOV/78-3-9-26/36 TITLE: The Interaction in the System GeO 2-HF-H20 at a Temperature of 250C (0 vzaimodeystvii v sisteme GeO 2-HF-H20 pri 250) PERIODICAL: Zhurnal neorganicheskoy khimii, 1958, Vol 3, Nr 9, pp 2165-2171 (USSR) ABSTRACT: The forms and conditions of production of fluorine compounds of germanium in the system GeO 2-HF-H20 were analyzed with physico-chemical methods. The methods used were the determinatio of solubility and electric conductivity. A diagram of solubility in the system GeO 2-HF-H20 was established. In the case of an HF con7tent of 0-35% there is a linearincrease of the solubilit3 of germr~nium oxide until a molar ratio of HF : GeO 2 - 4 is reached. In the range of betwAn 35 and 41% HF the solubility curve changes the direction: In this point a transformation of GeF 4* 3H20 into,hexaflu-orine germanic acid - H2GeF 6* 2H20 - takes place. By determining the solubility and electric con- Card 1/2 duotivity, as well as the pH-value of the solution it was SOV/78-3-9-26/38 The Interaction in the System GeO -HF-H 0 at a Temperature of 250C 2 2 shown that the compounds of the solid phase also exist in the aqueous medium. In the system GeO 2-HF-H 20 only H2[GeOF4) and H2[GeF6 are formed. Besides GeO2 also H 2 ~eOF 41-H20 and H GeP .2H,O appear as solid phases in the system. The formatioi 2[ 61 C. of these complex acids is confirmed by the determination of electric conductivity. There are 5 figures, 6 tables, and 13 references, 3 of which are Soviet. S'UBMITTED: July 24, 1957 Card 2/2 AUTHORS: Tananayev, I. V., Avduyevskaya, K. A. SOV/78-3-9-27/37e TITLE: Analysis of the Interaction in the System GeO 2-H2C 204-H20 at 250C (Issledovaniye vzaimodeystviya v sisteme GeO 2-H 2C20 4- H20 pri 250) PERIODICAL: Zhurnal neorgan-4cheskoy khimii, 1958, Vol 3, Nr 9, pp 2172-2177 (USSR) ABSTRACT: In the paper under review the interaction of GeO 2-H2C 204 in aqueous solutions was analyzed by the potentiometric method as well as by determining the electric conductivity and solubility at 250C. In the interaction of germanium oxide and oxalic acid the concentration of hydrogen ions increases. There is a continuous increase of the concentration of hydrogen ions and conductivity until. a ratio of H 20 204 : GeO 2 - 3 : 1 is reached, after which it remains constant. The resulting conclusion is that a complex of germanic acid with the formula H21Ge(C 204)31 exists in solution. The analyses of solubility at 250C sholned that 0,045 mol per liter dissolve in o)calic acid. In a saturate Card 1/3 solution of germanic acid with excess oxalic acid added SOV/78-3-9-27/38 Analysis of the Interaction in the System GeO 2-rH 2C20 4-H20 at 250C germanium oxalic acid crystallizes in colorless needle-shaped crystals. This compound has the following composition: H 2[Ge(C 204)3] .6H20. The result of the analysis was as follows: Ge = 16,7%, C20 4 ~6oiq%, H 20 = 23,64%. In an acid medium germanium oxalic acid exists as an ion only[Ge (C204 )3]2-. A lessening of the acidity of the solution gives rise to ions with a lower ratio of (C20 4)2- : Ge02* Thermograms of a complex of germanium oxalic acid were recorded. At 430C an endothermic effect occurs, which corresponds to the melting point of this compound. Ammonium and potassium salts of germanium oxalic acid were produced:(NH 4)2 [Ge(OH)2(C204)2]-3H20 and K2[Ge(OH)2(C204)2j -3H20. There are 5 figures, 3 tables, and 10 references, I of which -Is Soviet. SUBMITTED: April 7, 1958 Card 2/3 AUT11ORS: Tananayev, 1. V. , Ko,-Mi, Ya. L. 1-5-1-2 26 TITLE: The Investioation of the For.:,ation Reaction of Silver Chloride and Silver Bromide by Means of th,-, Method of Liaht Absorption (Issledovaniye reaktsiy obra:~ovaniya 1-.hlorida i bromida serebra, metodom svetopogasheniya) PERIODICAL: Zhurnal Analiticheskoy Khimii, 1958, Vol 13, 11r 1, pP. 11-17 (USSR) ABSTRACT: In an earlier paper (ref. 1) different systerzis with silver iodide were investi-ated by measurin- li.-ht aboorption. It was shovn that a connection exists between the solubility of a suspension of J.gJ and its light absorption. In the present article the results of the analogous investi,-.ations of systems with silver bromide and silver chloride are described. The composition of the precipitates in the systems '10-110 - 'Llr - 11 0 and AIGNO-KC1 - 11 0 was investigated by 3 2 3 2 measurement of the light absorption. The clearly marked maximum of the absorption of the developing suspension is Card 1/5 attained at a concentration ratio A&110 3 : KX = 1(X - Br, Cl), The Investi.-ation of the Formation Reaction of Silver Chloride 75-1-2/20" and Silver Bromide by Yeanj of the Method of LiL;ht Absorption The curve and with it also the degree of dispersion of the precipitate is almost symmetrically modified toward both sides of tho end point. Investigations of the systems A~;Br - KBr - 1120 and A~- C1 - KC1 - 1120 showea that tin increase in the concentration of the halogen ions causes an increase in absorption which is explained by tht.! increase in the solubility of the suspension by the addition of bromide and chloride ions. In a comparison of the results obtained with those already kno-i-,n for the xespective systems with AGJ, the uniforra s"lape of the curves is remarkable. The absorption maximuzi in all 3 systems is near similar values of the concentration of the potassium halide, between 10 1 and 2.10-1 M-ol/liter. The absorption of a suspension of AGC1 chan-,res only sli~;htly in concentrations of NaCl from lo-3 tn 10-2 ';~ol/liter, whereas at hi~~hcr concentrations of NaC1 the absorption increases rapidly. The rapid increase in li~lit absorption takes place within the same concentratio:: ran-e of 7,TaCl where the solubility of silver chloride also increases. When the quantity of the solid phn-ce beco~ncs Llomewhat ICZL:, due to the incruasin. zolu'-ility, the Card 2/5 valuo o-' '&1,c abzorption doess --ot The loss '.',he Investigation of the Formation Reaction o-A" Silver Chloride 75-1-2/26 and Silver Bromide by Means of the Method of Liah-t Ab3ar2tion of solid phase is compensated by an increase in absorption based on an increase in particles. The investigation of the systems AgBr - NH3 - U20 showed that after the addition of very little ammonia to a suspension of silver bromide a very rapid increase in light absorption takes place. A comparison with the system AgJ - N113 - U20 showed great differences which are due to the hiGhly different solubility of AUJ and AgBr in NH8. The system AgBr - Agif 3 - NH3 - H20 was investigated in order to determine the influence of excess silver ions in the presence of ammonia upon the absorption of a suspension of silver bromide. It became evident that the nature of the curves of light absorption as against the system without excess AgNO~ does not change. In both cases the extinction increases with increasing concentration of ammonia, runs through a maximum, and then decreases to 0, corresponding to a complete dissolution of AgBr. The higher the excess of Ag'"3, the more does the domain of the maximum viden. There- fore the complete dissolution of the precipitate is only Card 3/5 attained at considerably higher concentrations of am-monia. 4 . 0 0,11 ed. ilveT T,ti sy0f Xo N63 t 'VI tile xity, Ott 11 tevL IpOo n 131 "ODip. sl v OT tte 01 stv -,U Vae "hev - t,06e 01 -resVo Uee -~6 t)5.e OTL 01 O.TLS GOT e vac .15 tela J&e ttje iU til st tio 'b:f e tUe Tee Ile 'UtTa ttje &e tte.1- .,UI e arovLl Tisol, UGes iU & . s C. r, oj:~Ge e& ID to 1-4 eT Dl. Te 0-tv I t elle . aoll t-ric a, Go%,P &Ijje of xg, -?~T 'a 1,.t e a3-1 e of qjLj% 19 eo~ 0j&jV, 0-U TeB-t n M01:00'. eteli Tel OT teat ... Ge It - .2tiol, orvt'-O tyke . OtO ,.re5 T r 0.14, 11 .08, -03. Goal 0..bso tvLe 8,10 CL 3A1 ti OU is of 0, 'as ellts' io-as I-ret . 0 ~eO Tij~6 . Vetrl t1 ualto' el--Pe lb!-8-1- is eltl-%' -bill al a Vy t OtUT O~ GOUGeU ste -all tjje OSSI t~ae T 0.4 e 'pho 'arsej T e C, 9. 5 ttle s . q eT CC- Vas sil TVe -10 . e - e T O-f eT -je - e 0-T -a.r,t ~ OU OSSI r, e BID-Vic 5 . atI et . 0 U U to i0 IS ,steT-al T'i"i 5 te& To. 0 0,0 &eS - tte%'? 1 is 0 ~vpoy,014 'bT0 09. -r a 50 e Gee t coled, Te e1: ,fi ts 9-r Six', T eel Tw 15 ta - OV US' Tj I&OS Ile 10 s1 avas, gddd The Investigation of the Formation Reaction of Silver Chloride 75-1-2/26 and Silver Bromide by '.'eans of the Method of Light Absorption AVAILABLE: Library of Congress 1. 6ilver chloride - 'Ohemical reactions 2. 6ilver bromide - Chemical reActions 3. Light - Absorption - Neasurement Card 5/5 AUTHORS: Deychman, E. N., Tananayev I. V. 75-13-2-7/27 TITLE: Determination of Small ~u-.antititea of Indium by Titriimp- tric and Photometric 11uthodes (Opredeloniya malykh koli- chestv indiya titri:~ietricheskini i fotoractriclieskim metow dom') PE'RIODICAL: Zhurnal 11naliticheskoy Kiiii-iii, 19513, Vol. 13, Nr 2, pp. 196-2oo (USSR) ABSTRACT: One of the best known titrimetric methods for the determi= nation of indium. is based upon the potentiometric titration by means of Potassium ferrocyanide (Refi 1). The composition KIn5[Fe(CII)6] is ascribed to the compound formed here. Koll= tgof (Ref. 2) says, however, that the composition of the precipitating deposit was not yet investigated. In the in= vestigation of the systems of indium chloride and of the ferrocyanides of the alkalin6 metals (Refs. 3,4) it was found that the following order applies for the tendency to form mixed ferrocyanides with indium difficult to be solved: Li~llla(K