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The effect of triphenylmethyl cations on the electroreduction of O2 in nitrobenzene or acetonitrile
Authors:Chunnian Shi  Fred C Anson
Institution:Division of Chemistry and Chemical Engineering, Arthur Amos Noyes Laboratories, California Institute of Technology, Pasadena, CA 91125, USA
Abstract:The electroreduction of O2 in two aprotic solvents (nitrobenzene and acetonitrile) was examined in the absence and in the presence of the very strong Lewis acid, triphenylmethyl cation, φ3C+ (φ=phenyl). The addition of φ3C+ causes the electroreduction of O2 to change from the one-electron reduction to O2?/> into the two-electron reduction to φ<sub>3</sub>CO<sub>2</sub>Cφ<sub>3</sub> at a potential that is 1 V more positive than that where O<sub>2</sub> is reduced to O<sub>2</sub><sup>?</sup><img style=
Keywords:Non-aqueous solvents  Dioxygen  Triphenylmethyl carbocation  Electroreduction
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