Electron Transfer From Indoles, Phenol, and Sulfite (SO32-) to Chlorine Dioxide (ClO2.)

Article abstract of DOI:10.1021/j100312a029

With the ClO2/ClO2^- couple as reference the one-electron-reduction potentials have been determined for four methylated indolyl radical cations.Their E^o values are 1.23 V (N-Me), 1.10 V (2-Me), 1.07 V (3-Me), and 0.93 V (2,3-diMe).E^o values were also measured for the following: tryptophylH^.+/trypH 1.24 V, SO3^.-/SO3^2- 0.76 V, and phenoxy^./phenolate 0.80 V.The redox potentials were obtained from purely kinetic data (for tryptophan and 2-, 3-, and N-methylindole) or from combined kinetic and thermodynamic measurements.