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 .
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