Electrochemical and spectroelectrochemical study of cyclometallated platinum derivatives with nitrogen ligands. Electrogeneration of monomeric reduced platinum species

The cathodic reduction of the complexes [LPtCl] and [LPtL′] (BF4) [HL 6-(1-methylbenzyl)-2,2′-bipyridine and L′ triphenylphosphine, pyridine, or acetonitrile] has been studied in acetonitrile and dichloromethane solvents. The main goal has been that of defining the nature and reactivity of the corresponding relatively stable one-electron reduced forms. In particular, X-band EPR spectrometry has allowed us to get information about the character (metal- or ligand-based) of the unpaired extra electron of the reduced species