Reactions of trans-chloro(triphenylsilyl)bis(dimethylphenylphosphine)platinum and its arsenic analogue

Abstract

The complexes trans-[PtCl(SiPh 3)(QMe 2Ph) 2], where Q = P or As, have been shown to react with lithium or sodium salts, MX, in acetone to give trans-[PtX(SiPh 3)(QMe 2Ph) 2], where X = Br, I, N 3, or NCS. The complex trans-[PtCl(SiPh 3)(PMe 2Ph) 2] likewise reacts with phenyl- or pentafluorophenyllithium or with m- or p-fluorophenylmagnesium bromide to give [Pt(aryl)(SiPh 3)(PMe 2Ph) 2], where aryl = C 6H 5, C 6F 5, m- or p-C 6H 4F; the C 6F 5 complex has a cis-configuration but the other three have trans-configurations. Tin(II) chloride and indium(I) chloride add to trans-[PtCl(SiPh 3)(PMe 2Ph) 2] to give trans-[Pt(SnCl 3)(SiPh 3)(PMe 2Ph) 2] and trans-[Pt(InCl 2)(SiPh 3)(PMe 2Ph) 2], respectively. Tin(II) bromide and trans-[PtBr(SiPh 3)(PMe 2Ph) 2] correspondingly give trans-[Pt(SnBr 3)(SiPh 3)(PMe 2Ph) 2]. Phenylacetylene appears to insert into the PtSi bond of trans-[PtCl(SiPh 3)(PMe 2Ph) 2] to give trans-[PtCl{C 2HPh(SiPh 3)}(PMe 2Ph) 2].