Abstract
1. Using the stopped-flow method in a noncorrodable apparatus made from glass and Teflon, the effect of ascorbic acid on the kinetics of the autoxidation of Cu+dipy2 has been studied. 2. The “partial charge-transfer” oxygen complex has been reacted with ascorbate anion, the oxidation of Cu+dipy2 being accompanied predominantly by a two-electron reduction of O2 without the formation of intermediate superoxide radicals. 3. The oxygen adduct reacts predominantly with the nonionized form of ascorbic acid. Oxidation of Cu+dipy2 as a result of this reaction is accompanied by reduction of O2 either to H2O2 or to HO2.
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