Synthesis and novel reactivity of platinum phosphine–borane complexes trans-[PtH(PPhR·BH3)(PEt3)2 ] (R = H, Ph)

Abstract

The oxidative-addition reaction of Pt(PEt₃)₃ with the phosphine–borane adducts PhPH₂·BH₃ and Ph₂PH·BH₃ leads to regioselective insertion of the Pt(PEt₃)₂ fragment into the P–H bond to afford the hydride complexes trans-[PtH(PPhR·BH₃)(PEt₃)₂ ] (R = H 1, R = Ph 2); reaction of 2 with PhPH₂·BH₃ leads to an unusual ligand exchange reaction which generates 1 and Ph₂PH·BH₃.