On the borderline between cis and trans in organometallic (phosphane)platinum(II) complexes

被引:19
作者
Gudat, D
Jain, VK
Klein, A
Schurr, T
Zális, S
机构
[1] Univ Cologne, Inst Anorgan Chem, D-50939 Cologne, Germany
[2] Univ Stuttgart, Inst Anorgan Chem, D-70569 Stuttgart, Germany
[3] Bhabha Atom Res Ctr, Novel Mat & Struct Chem Div, Bombay 400085, Maharashtra, India
[4] Acad Sci Czech Republ, Inst Chem Phys, Prague 18000 8, Czech Republic
关键词
density functional calculations; isomers; NMR spectroscopy; phosphatic ligands; platinum;
D O I
10.1002/ejic.200500251
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The borderline between the cis and trans configurations in square-planar diarylplatinum(ii) complexes with triethylphosphane ligands [Pt(Ar)(2)(PEt3)(2)] [Ar = 2,4,6-trimethylphenyl (mesityl), 2,6-dimethylphenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl and phenyl] has been investigated by a combination of multinuclear (H-1, C-13, P-31 and Pt-195) NMR spectroscopy, X-ray crystallography and quantum chemical (DFT) calculations. When formed under thermodynamic conditions, the complexes show a clear cutoff between cis (tolyl and phenyl complexes) and trans (2,6-xylyl and mesityl complexes). The syn and anti stereoisomers were identified for the 2-methylphenyl and 3-methylphenyl derivatives. Calculated data (structural isomers or NMR) are in excellent agreement with experimental findings. (c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005.
引用
收藏
页码:4056 / 4063
页数:8
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