Mono- and bi-nuclear four-membered methanide auracycles; synthesis and reactivity. X-Ray structure of cis-[Au(C6F5)2(SPPh2O)(CH2PPh2Me)]

Abstract

The complexes [Au(C₆F₅)₂Cl(SPh₂PCH₂PPh₂CH₂R)]ClO₄(R = H or Ph) react with Na₂CO₃ or NaH to give four-membered methanide auracycles [[graphic omitted]HPPh₂CH₂R)]ClO₄ or [[graphic omitted]PPh₂CH₂R)], respectively; these complexes can be interconverted by reaction with with NaH or HClO₄. The neutral derivatives can be used to form homobinuclear complexes [[graphic omitted]C(AuX)PPh₂Me}](X = C₆F₅ or Cl) and [[graphic omitted](AuPPh₃)PPh₂Me}]BF₄ and react with water to give [Au(C₆F₅)₂(SPPh₂O)(CH₂PPh₂CH₂R)]. The structure of [Au(C₆F₅)₂(SPPh₂O)(CH₂PPh₂Me)] has been solved by X-ray crystallography.