Synthesis and characterisation of adducts of [Pt₂(μ-S) ₂(PPh₃)₄] with organo-palladium and platinum-hydride substrates

Abstract

The reactions of [Pt₂(μ-S) ₂(PPh₃)₄] towards a range of palladium(II) complexes containing organometallic ligands (cyclopalladated N-donor ligands, η³-allyl, phenyl) have been explored, leading to the formation of a series of cationic, trinuclear sulfido-bridged aggregates containing {Pt₂PdS₂} cores. [Pt₂(μ-S) ₂(PPh₃)₄] also reacts with the platinum(II) hydride complex trans-[PtHCl(PPh3)₂] giving the adduct [Pt₂(μ-S) ₂ (PPh₃)₄PtH(PPh₃)]+. X-ray crystal structure determinations on the complexes [Pt2(μ-S) ₂ (PPh₃)₄PdPh(PPh₃)]PF₆ and [Pt₂ (μ-S) ₂ (PPh₃)₄PtH(PPh₃)]PF₆ are reported, and show the expected bis μ₃-sulfido aggregates with three square-planar metal centres.