Новые ионные комплексы платины(IV): [Ph3PCH3][PtBr5(dmso)] и [C(CH2OH)3NH3][K][Pt(SCN)6]

A. R. Zykova; D. A. Zherebtsov; O. S. Eltsov

Authors

A. R. Zykova South Ural State University
D. A. Zherebtsov South Ural State University
O. S. Eltsov Ural Federal University named after the first President of Russia B.N.Yeltsin

Keywords:

hexabromoplatinate, hexakis(thiocyanato-S)palatinate, dimethyl sulfoxide, acetonitrile, IR, NMR spectroscopy, elemental analysis

Abstract

The first reports on dimethyl sulfoxide complexes appeared in the early 60s of the previous century. A large contribution into development of this field was made by a group of scientists led by Yu.N. Kukushkin, who studied the properties of complexes of platinum metals (II). Ionic dimethyl sulfoxide complexes of platinum (IV) are currently studied to a lesser extent. Methyltriphenylphosphonium (dimethylsulfoxide) pentabromoplatinate [Ph₃PCH₃][PtBr₅(dmso)] (1) was obtained by dissolution of methyltriphenylphosphonium hexabromoplatinate in dimethyl sulfoxide with the 85% yield. Complexes of platinum with hexakis(thiocyanato-S)platinum anions have hardly been studied. According to the data from the Cambridge Structural Database CSD, only five hexakis(thiocyanato-S)platinum complexes were synthesized and structurally characterized, most of which had been obtained in the period from 1978 to 1999. Hexakis(thiocyanato-S)platinum complex of platinum [C(CH₂OH)₃NH₃(K)][Pt(SCN)₆] (2) with two different cations (potassium and organylammonium) was synthesized from tris(2-hydroxymethyl)methylammonium chloride and potassium hexathiocyanatoplatinate in an aqueous solution of acetone with the 58% yield. The structure of the synthesized compounds was proven by IR, NMR spectroscopy and X-ray fluorescence analysis. The IR spectra of compounds 1 and 2 were recorded on a Shimadzu IRAffinity-1S IR spectrometer in KBr pellets in the range 4000–400 cm^–1. The ¹H and ¹³C NMR spectra were recorded on a Bruker AVANCE 500 spectrometer (500 MHz). Chemical shifts were measured from the internal TMS standard for ¹H nuclei, from the solvent signal for ¹³C nuclei (dC 39.5 ppm). The elemental composition of the obtained samples was studied on a Jeol JSM 7001F scanning electron microscope equipped with an Oxford INCA X-max 80 X-ray energy-dispersive spectrometer.

Author Biographies

A. R. Zykova, South Ural State University

помощник проректора

D. A. Zherebtsov, South Ural State University

доктор химических наук, старший научный сотрудник

O. S. Eltsov, Ural Federal University named after the first President of Russia B.N.Yeltsin

доцент, заведующий лабораторией

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