Homogeneous versus heterogeneous self-exchange electron transfer reactions of metal complexes: Insights from pressure effects

Although the kinetics and mechanisms of electron transfer reactions in homogeneous solution have been intensively studied by the inorganic reaction mechanisms community since 1945, corresponding studies of electrode reaction kinetics have largely remained the preserve of electrochemists. This review attempts to bridge the gap between the inorganic mechanistic and electrochemical traditions. Discussed are the experimental approaches to electrode kinetics, theory and observation in electron transfer reactions, and insights from pressure effects.