Synthesis and characterisation of the platinum complexes [PtCl(CCl=PAr)(PPh3)2] and [PtCl(CCl-PAr′)(PPh3)2] as potential intermediates in the preparation of phosphaalkynes

Oxidative addition reactions of Cl2C=PR (R = 2,4,6-tris(trifluoromethyl)phenyl (Ar) or 2,6-bis(trifluoromethyl)phenyl (Ar') with Pt(PPh3)(4) yield the cis and trans (at platinum) complexes [PtCl(C=PAr)(PPh3)(2)] and [PtCl(CIC=PAr')(PPh3)(2)]. All starting materials and intermediates have been characterised by NMR spectroscopy. The crystal and molecular structures of the transplatinum complexes have been determined by single-crystal X-ray diffraction at low temperature. (c) 2005 Elsevier B.V. All rights reserved.