CYCLIC VOLTAMMETRIC INVESTIGATION OF THE MECHANISM OF THE OXIDATION OF ORGANIC-COMPOUNDS ON A GLASSY-CARBON ELECTRODE IN THE PRESENCE OF AROMATIC N,N'-DIOXIDES AS ORGANIC MEDIATORS

The mechanism of the oxidation of a series of alcohols, ethers, ketone s, and aliphatic alkylaromatic hydrocarbons in the presence of phenazi ne N,N'-dioxide (PhNDO), as well as methanol and cyclohexane in the pr esence of 2,5-dimethylpyrazine N,N'-dioxide, 2,3,5,6-tetramethylpyrazi ne N,N'-dioxide, and 2,3-dimethyltetrahydroquinoxaline N,N'-dioxide ha s been investigated by cyclic voltammetry on a glassy carbon electrode in 0.2 N LiClO4 in acetonitrile. An overall two-electron mechanism fo r the oxidation of each organic compound in a catalytic process within the composition of a complex with the radical cation of the N,N'-diox ide has been proposed.