On the Borderline between cis and trans in Organometallic(Phosphane)platinum(II) Complexes

✍ Scribed by Dietrich Gudat; Vimal K. Jain; Axel Klein; Thilo Schurr; Stanislav Záliš

• Book ID: 102166517
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 149 KB
• Volume: 2005
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200500251

✦ Synopsis

Abstract

The borderline between the cis and trans configurations in square‐planar diarylplatinum(II) complexes with triethylphosphane ligands [Pt(Ar)~2~(PEt~3~)~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 (^1^H, ^13^C, ^31^P and ^195^Pt) NMR spectroscopy, X‐ray crystallography and quantum chemical (DFT) calculations. When formed under thermodynamic conditions, the complexes show a clear cut‐off 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. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)