(Diphenylphosphinomethyl)diphenylphosphine sulphide (Ph2PCH2PPh2S) and its methanide anion Ph2PCHPPh2S– as ligands in organogold chemistry. X-Ray crystal structure of cis-[Au(C6F5)2(PPh2CHPPh2S)]

Abstract

Stable gold complexes containing uni- or bi-dentate Ph₂PCH₂PPh₂S are described. Deprotonation of the ligand yields complexes containing the anionic ligand Ph₂PCHPPh₂S^–, which acts either as a P,S-chelating ligand or as a P, C, S-bridging six-electron ligand. The molecular structure of [Au(C₆F₅)₂(Ph₂PCHPPh₂S)] has been established by X-ray crystallography. The P–C bond lengths are appreciably shorter than in complexes containing chelating Ph₂PCH₂PPh₂.