The mechanism of CC bond formation on the Pt(IV) center involving chelate metallocycle ligands

An unusual fact of CC reductive elimination reaction in bis-chelated Pt(IV) complexes under mild conditions was studied. It has been shown that breaking at least one of the chelate rings is required to promote a carboncarbon bond formation reaction. An intermediate complex, which resulted from a chelate ligand breaking process, was detected directly in the reaction mixture using 2D 1H–195Pt heteronuclear NMR spectroscopy.