High Quality Content by WIKIPEDIA articles! In chemistry, peroxocarbonate is a divalent anion with formula CO42?. It is an oxocarbon anion, that consists solely of carbon and oxygen. It would be the anion of an hypothetical peroxocarbonic acid HO–CO–O–OH. The peroxocarbonate anion is formed, together with peroxodicarbonate C2O62?, at the negative electrode during electrolysis of molten lithium carbonate. Lithium peroxocarbonate can be produced also by combining carbon dioxide CO2 with lithium hydroxide in concentrated hydrogen peroxide H2O2 at ?10°C. The peroxocarbonate anion has been proposed as an intermediate to explain the catalytic effect of CO2 on the oxidation of organic compounds by O2. The potassium and rubidium salts of the monvalent hydrogenperoxocabonate anion H-O-O-CO2? have also been obtained.

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