Synthesis, characterizations and structure of orthometallated Pt(II) and Pt(IV) complexes: Oxidative addition to C,N,N,O coordinated Pt(II) complexes

Reactions of 2-(arylazo)-1-N-salicylidene phenylamine, H2L, 1, [H represents the dissociable protons upon complexation], with K2PtCl4 afforded orthometallated complexes of composition [Pt(L)], 2 where the Pt(II) is coordinated by the tetradentate (C,N,N,O) ligand, L2−. Reaction of the precursor complex [Pt(L)] with I2 afforded octahedral complexes of composition [PtI2(L)], 3. All the complexes were characterized unequivocally. X-ray crystal structure of [Pt(L1)] and [Pt I2(L1)] have been determined.

Newly prepared orthometallated complexes of Pt(II) underwent facile oxidative addition without breakage of Pt–C bond. The strategy is fascinating in terms of the synthesis of orthoplatinated Pt(IV) complex.Figure optionsDownload as PowerPoint slide