Synthesis of the isomers of dichlorodiammineplatinum(II) from the magnus salt

Synthesis of the isomers of dichlorodiammineplatinum(II) from the magnus salt ISSN 1070-3284, Russian Journal of Coordination Chemistry, 2006, Vol. 32, No. 9, p. 692. © Pleiades Publishing, Inc., 2006. Original Russian Text © A.K. Starkov, V.I. Kazbanov, G.A. Kozhukhovskaya, A.G. Olado, 2006, published in Koordinatsionnaya Khimiya, 2006, Vol. 32, No. 9, p. 720. LETTERS TO THE EDITOR Synthesis of the Isomers of Dichlorodiammineplatinum(II) from the Magnus Salt A. K. Starkov, V. I. Kazbanov , G. A. Kozhukhovskaya, and A. G. Olado Institute of Chemistry and Chemical Technology, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russia Received February 6, 2006 DOI: 10.1134/S1070328406090120 Complex compounds of potassium or ammonium The salt trans-[Pt(NH ) Cl *] is used to prepare tet- 3 2 2 trichloroammineplatinate(II) are used as starting mate- raamminedichloroplatinum(II), which is employed in rials in the synthesis of biologically active mixed plati- the synthesis of monoammineplatinum(II) compounds num complexes of the second and third generations [1]. [6]. The salt cis-[Pt(NH ) Cl *] is used as a biologically 3 2 2 The synthesis of these complexes involves tetraam- active substance [1] and as the starting reagent for the minedichloroplatinum(II) and potassium tetrachloro- synthesis of potassium or ammonium trichloroammine- platinate(II) as subsidiary complexes, which are then platinate(II) [6]. removed from the reaction in the form of the insoluble Thus, the proposed method provides substantial Magnus salt [Pt(NH ) ][PtCl ]. This salt is not 3 4 4 increase in the yield of potassium or ammonium employed in subsequent synthesis of potassium or trichloroammineplatinate(II) due to the use of platinum ammonium trichloroammineplatinate(II), which sub- from the Magnus salt. stantially (by half) lowers the yields of the major prod- ucts [2–5]. REFERENCES This study was devoted to the synthesis of the iso- mers of dichlorodiammineplatinum(II) from the Mag- 1. Cleare, M.J., Coord. Nhem. Rev., 1974, vol. 12, no. 4, p. 349. nus salt. 2. Jorgensen, J., Z. Anorg. Chem., 1890, vol. 24, p. 181. The Magnus salt [Pt(NH ) ][PtCl ] was added to an 3 4 4 3. Gel’man (Nikitina), A.D., Kompleksnye soedineniya aqueous solution of ammonium acetate. The reaction platiny s nenasyshchennymi molekulami (Complex mixture was heated for an hour and then cooled. Hydro- Compounds of Platinum with Unsaturated Molecules), chloric acid was added and the resulting microcrystal- Moscow: Akad. Nauk SSSR, 1945, p. 96. line salt Pt(NH ) Cl was isolated in 80% yield. Heat- 3 2 2 4. Gel’man, A.D., Karandasheva, E.F., and Essen, L.N., Izv. ing was continued for 1.5 h. On cooling, trans*- Sektora Platiny I Dr. Blagorodnykh Metallov AN SSSR, 1949, no. 24, p. 60. [Pt(NH ) Cl ] was isolated in 78% yield. The isomers 3 2 2 5. Zheligovskaya, N.N., Dyakova, G.B., Fat’kin, A.Yu., of dichlorodiammineplatinum(II) were identified, and and Bokareva, S.S., Koord. Khim., 1991, vol. 17, no. 10, their structures were proven, by elemental and X-ray p. 1412. diffraction analyses, IR spectroscopy, and UV spectro- 6. Sintez kompleksnykh soedinenii metallov platinovoi photometry. gruppy (Synthesis of Complex Compounds of Platinum Group Metals), Chernyaev, I.I., Ed., Moscow: Nauka, Deceased. Russian Journal of Coordination Chemistry Springer Journals

Synthesis of the isomers of dichlorodiammineplatinum(II) from the magnus salt

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Chemistry; Inorganic Chemistry; Physical Chemistry
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