Immobilization of a high-valent rhenium complex on an indium-doped tin-oxide electrode:: Enhanced catalytic activity of a trans-dioxorhenium(v) complex in electrochemical oxidation of alcohols

A high-valent trans-dioxorhenium(V) complex containing pyridine ligands was successfully immobilized on an ITO (indium-doped tin-oxide) electrode. The complex formed a monolayer structure on the electrode surface and promoted electrochemical catalytic oxidation of 1-phenylethanol to acetophenone in CH2Cl2. Oxidation hardly occurred in CH2Cl2 solution containing the free rhenium(v) complex. Immobilization of other high-valent metal complexes will present opportunities for design of functional electrodes with high activities. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.