Electrochemical and spectroelectrochemical studies of metalloporphyrins containing ruthenium, nickel, iron, titanium, molybdenum as central metal and a novel ruthenium (II, III) dimer

Electrochemical and Spectroelectrochemical techniques were used to characterize the electron transfer reactions of several synthetic metallo- porphyrins as well as a novel ruthenium dimer. These metalIoporphyrins include complexes containing ruthenium(II), nickel (II), iron(III), titanium(IV) and molybdenum(VI) as central metal. Formation constants for ligand addition to the sixth axial site of TPPRu(CO) and [TPPRu(CO)]+ were calculated and related to changes in redox potentials. Investigated ligands include: twenty nitrogenous bases as well as ten nonaqueous aprotic solvents which could complex the porphyrin. [...]