Bi-, tetra-, and poly-nuclear complexes of gold(I) and silver(I) with bis(diphenylphosphino)-methanide or -amide acting as six-electron donors

Abstract

The reaction of [AuCl(CH₂PPh₃)] or [Ag(CH₂PPh₃)₂]ClO₄ with bis(diphenylphosphino)amine, bis(diphenylphosphino)methane, or bis(diphenylthiophosphoryl)amine leads to neutral complexes [X(Ph₂PAuPPh₂)₂X][X = CH (1) or N (2)], [N{Ph₂P(S)Au(S)PPh₂}₂N](3)[N(Ph₂PAgPPh₂)₂N](4), or [N{Ph₂P(S)Ag(S)PPh₂}₂N](5). Complexes (1), (2), and (4) react further with gold or silver complexes giving tetranuclear ring-system derivatives in which the amido or methanido ligand is acting as a six-electron donor ligand.