Reactions of zero- and di-valent platinum metal complexes with phosphirene ring systems. Crystal structures of cis-[PtCl2(PEt3)(PPhCPhCPh)], cis-[Ptl(PPh3)(CPhCPhPPhMe)] and [(Et3P)2Pt(CPhCPhPPh)W(CO)5]
Abstract
The phosphirene ring system Ph[graphic omitted]Ph 1 undergoes unidentate ligation and/or insertion reactions with a variety of platinum metal complexes. Insertion reactions also occur with the [W(CO)5] adduct of 1. Detailed NMR and single-crystal X-ray studies on [PtCl2(PEt3)([graphic omitted]Ph)] and [(Et3P)2Pt(CPhCPhPPh)W(CO)5] confirm the nature of both types of complexes. The compounds [{PtCl2(PEt3)}2] and Mel react with [Pt(PPh3)2(CPhCPhPPh)] to give [(Ph3P)2Pt(CPhCPhPPh)PtCl2(PEt3)] and [Ptl(PPh3)(CPhCPhPPhMe)], respectively, the latter being characterised by a single-crystal X-ray diffraction study.