Studies of Unusual Oxidation States of Transition Metals Ⅱ——Kinetics and Mechanism of Oxidation of Pyruvate by Diperiodatoargentate (Ⅲ)Ion

Abstract

Abstract: The kinetics of oxidation of pyruvate by diperiodatoargentate(Ⅲ) ion (DPA) has been studied spec-trophotometrically in alkaline medium. It was found that the reaction order with respect to both DPAand pyruvate is unity and the rate equation can be expressed as -d[Ag(Ⅲ)]₁/dl=k₀[Ag(Ⅲ)]₁·[CH₃COCOO] The rate increases with the increase in [OH ] and decreases with the increase in [periodate]. There is a positive ionic strength effect in this reaction system. Amechanism has been proposed to explain the experimental results. The observed activation parameters are presented.

Key words: Pyruvate, Diperiodatoargentate(Ⅲ), Kinetics, Oxidation, Mechanism

Shi Tiesheng, Wang Zhipu . Studies of Unusual Oxidation States of Transition Metals Ⅱ——Kinetics and Mechanism of Oxidation of Pyruvate by Diperiodatoargentate (Ⅲ)Ion[J]. Chemical Research in Chinese Universities, 1990, 6(2): 130-134.

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Studies of Unusual Oxidation States of Transition Metals Ⅱ——Kinetics and Mechanism of Oxidation of Pyruvate by Diperiodatoargentate (Ⅲ)Ion

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