Transition metal–carbon bonds. Part XXVII. Oxidative addition reactions of [PtMe2(dias)], dias o-phenylenebis(dimethylarsine)

Abstract

[PtMe2(dias)] is shown to undergo oxidative addition reactions with alkyl or acyl halides at least as readily as a corresponding complex with a monodentate ligand such as cis-[PtMe2(AsMe2Ph)2]. Acyl halides add trans to give platinum (IV) adducts, [PtXRMe2(dias)](X = halogen; R = acetyl or benzoyl) but allylic halides add cis(R = allyl or 2-methylallyl). The stereochemistries follow from the 1H n.m.r. and i.r. spectra. These complexes show interesting correlations between values of J(195Pt–CH3), τCH3, ν(Pt–C), ν(Pt–Cl) and δs(CH3).