ORBITAL SYMMETRY INFLUENCES ON SOME CROSS-BRIDGE ELECTRONIC INTERACTIONS AND ELECTRON-TRANSFER RATES

Kinetic studies of Ti(III) reduction of Co(III) and Ru(III) oxidants, and electrochemical and spectroscopic studies of diruthenium complexes that are analogs for the transition states of those reactions, lead t o the conclusion that dihydroxyquinolate anions provide a moderate deg ree of cross-bridge coupling between metal t2g orbitals, so that rate constants for electron transfer between such orbitals can be measured on the stopped-flow time scale.