Reactions of silanes and germanes with iridium complexes. Part 3. Reactions of some silyl derivatives of O, S, Se, N, and P with trans-carbonyliodobis(triethylphosphine)iridium(I)

Abstract

The title complex, trans-[Ir(CO)l(PEt₃)₂], (1), reacts with Y(SiH₃)₂(Y = O, S, or Se) in benzene to give [Ir(CO)Hl(PEt₃)₂(SiH₂YSiH₃)] or [{Ir(CO)Hl(PEt₃)₂(SiH₂)}₂Y], although when Y = O the formation of the former species is difficult to detect. Reaction between (1) and P(SiH₃)₃ leads to the formation of [Ir(CO)Hl(PEt₃)₂{SiH₂P(SiH₃)₂}], [{Ir(CO)Hl(PEt₃)₂(SiH₂)}₂PSiH₃], or [{Ir(CO)Hl(PEt₃)₂(SiH₂)}₃P], depending on the proportions of the reactants taken. Reaction between (1) and N(SiH₃)₃ gives [Ir(CO)Hl(PEt₃)₂{SiH₂N(SiH₃)₂}] and [{Ir(CO)Hl(PEt₃)₂(SiH₂)}₂NSiH₃], but no tris(iridiosilylamine) was detected. The compounds have been characterised by ¹H and ³¹P n.m.r. spectroscopy and in some cases by analysis.