Bis(diphenylphosphino)acetylene as bifunctional ligand in cycloplatinated complexes: Synthesis, characterization, crystal structures and mechanism of MeI oxidative addition

Binuclear cycloplatinated(II) complexes with general formula of [Pt2Me2(CˆN)2(μ-dppac)], in which CˆN = deprotonated 2-phenylpyridine (ppy) or deprotonated benzo{h}quinoline (bhq) and dppac = 1,1′-bis(diphenylphosphino)acetylene, are synthesized and the kinetics and mechanism of oxidative addition of MeI to these complexes are studied.