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Journal of Structural Chemistry

2016 year, number 6

Structure and properties of the volatile isomers of bis-(1,1,1-trifluoro-5,5-dimethylhexane-2,4-dionato)platinum(II)

I.A. Bai'dina, G.I. Zharkova, D.A. Piryazev
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: b-дикетонаты платины(II), изомеры, структура, летучесть, b-diketonates of platinum(II), isomers, structure, volatility

Abstract

In the work isomeric complexes of platinum(II) with the (ptac)-1- Pt((CH3)3-CO-CH-CO-CF3)2 pivaloyltrifluoroacetonate ion are studied. The synthesis and chromatographic separation of ​ Pt(ptac)2 isomers is described, TGA data for the separated isomers are given, and the crystal structures of solid phases are studied. The cis -Pt(ptac)2 complex crystallizes in the space group Р -1, a = 10.7091(4), b = 12.7787(6), c = 16.0154(8) , = 92.389(2), = 90.868(2), = 112.1260(10), V = 2027.39(16) 3, Z = 4, d calc = 1.918 g/cm3. The trans -Pt(ptac)2 complex crystallizes in the space group C 2/ m , a = 13.3235(5), b = 8.5515(3), c = 9.6694(3) , = 118.5880(10), V = 967.38(6) 3, Z = 2, d calc = 2.010 g/cm3. The structures of the complexes are molecular, the Pt atom has a square coordination of four oxygen atoms of two ligands; for cis- Pt(ptac)2 the Pt-Oav distance is 1.968 , for trans -Pt(ptac)2 it is 1.980 .