One-Electron Oxidation in Irradiated Carbon Tetrachloride Solutions of ZnTPP, TMPD, and Phenols

Article abstract of DOI:10.1021/j150650a038

One-electron oxidation of phenol, p-methoxyphenol, N,N,N',N'-tetramethyl-p-phenylenediamine, chlorpromazine, and zinc tetraphenylporphyrin was studied by pulse radiolysis in carbon tetrachloride solutions.Phenols form phenoxyl radicals and the other compounds form cation radicals with yields strongly dependent on solute concentration.The highest yield in deoxygenated solutions approached G = 4.In the presence of oxygen an additional oxidation step is observed owing to CCl3O2^. radicals and the overall oxidation yield approached G = 8.ZnTPP was found to be oxidized to the cation radical without any side effects, unlike oxidation in 1,2-dichloroethane which was accompanied by demetallation owing to HCl production.