Intramolecular cyclization assisted oxidative addition: synthesis of octahedral cycloplatinated methyl complexes

Abstract

Cycloplatination of XMeC₆H₄CCC-(R_f) (N-4-OCH₃C₆H₄) [X = S, Se and R_f = perfluoroalkyl groups] with PtCl₂ gave a monomeric platinum(IV) complex having an octahedral structure with one annulated heterocycle coordinated in a plane and another out of the plane. The formation of platinum(IV) complex 2a, confirmed by analysis of its X-ray crystal structure, follows simultaneous cyclization and oxidative addition of methyl chloride generated during the cyclization. The emission and reactivity studies of platinum(IV) complexes are discussed.