Synthesis and characterisation of the platinum complexes [PtCl(CCldouble bond; length as m-dashPAr)(PPh3)2] and [PtCl(CCldouble bond; length as m-dashPAr′)(PPh3)2] as potential intermediates in the preparation of phosphaalkynes

Oxidative addition reactions of Cl2Cdouble bond; length as m-dashPR (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(ClCdouble bond; length as m-dashPAr)(PPh3)2] and [PtCl(ClCdouble bond; length as m-dashPAr′)(PPh3)2]. All starting materials and intermediates have been characterised by NMR spectroscopy. The crystal and molecular structures of the trans-platinum complexes have been determined by single-crystal X-ray diffraction at low temperature.