Trimethylsilylmethyl gold(I) complexes. X-ray structure of [Au(CH2SiMe3)PPh2CH2PPh2Me]ClO4 · 0.25CH2Cl2

Article abstract of DOI:10.1016/S0022-328X(97)00158-7

The reaction of [AuCl(L)] (L = AsPh₃ or PPh₃) with Mg(CH₂SiMe₃)Cl gives the neutral complexes [Au(CH₂SiMe₃)L] [L = ASPh₃ (1) or PPh₃ (2)]. Complex 1 undergoes substitution reactions with monodentate ligands to afford mononuclear complexes [Au(CH₂SiMe₃)PPh₃] or [Au(CH₂SiMe₃)L′]ClO₄ [L′ = PPh₂CH₂PPh₂Me (3) or PPh₂CH₂PPh₂CH₂C₆F₅ (4)]. If a potentially bidentate ligand is used, the latter reaction gives mononuclear or dinuclear complexes, [Au(CH₂SiMe₃)dppe] (dppe = PPh₂CH₂CH₂PPh₂) (5) or [(Me₃SiCH₂)Au(L-L)Au(CH₂SiMe₃)] [L-L = dppm (6) or dppe (7)] (dppm = PPh₂CH₂PPh₂), depending on the molar ratio. The structure of [Au(CH₂SiMe₃)PPh₂CH₂PPh₂Me]ClO₄ has been established by an X-ray diffraction study.