Abstract
AbstractFerrocene can be oxidized by molecular oxygen in acidic aqueous ethanol. The rate is first order in oxygen and second order in ferrocene and in acid. Probably, hydrogen peroxide is an intermediate. This hydrogen peroxide is able to oxidize ferrocene and ferricenium ions, but the rates of these reactions are relatively slow. Hydrogen peroxide is removed mainly by reaction with the solvent ethanol. The latter reaction is catalyzed by small amounts of iron ions which originate from decomposition of ferrocene. The presence of this catalytic effect of iron ions in the reaction between hydrogen peroxide and solvent was shown in separate experiments.
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