A comparative study of metallating agents in the synthesis of [C,N,N′]-cycloplatinated compounds derived from biphenylimines

New [C,N,N′] cyclometallated platinum(II) compounds derived from 2- and 4-biphenylimines as well as their [N,N′] precursors were prepared using cis-[PtCl2(dmso)2] or cis-[PtPh2(SMe2)2] as substrates. The influence in these reactions of the phenyl substituent in 2- or 4-positions and the reactivity of the obtained compounds towards oxidative addition were studied.