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Kinetics and mechanism of oxidation of l-cystine by manganese(III) in sulfuric acid medium

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Abstract

The kinetics of oxidation of l-cystine by MnIII have been studied in sulfuric acid medium at 30 °C. The reaction was followed spectrophotometrically at λmax = 500 nm. The reaction shows first order dependence on both [MnIII] and [cystine]. It was found that the rate of the reaction decreases with increase of [H+] up to a certain point and then remains unchanged. The oxidation product of the reaction was found to be cysteic acid. A plausible mechanism has been proposed to account for the experimental results.

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  1. Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, Visakhapatnam, 530 003, India

    Nowduri Annapurna, Adari Kalyan Kumar, Parvataneni Vani & Gollapalli Nageswara Rao

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  1. Nowduri Annapurna
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  2. Adari Kalyan Kumar
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  3. Parvataneni Vani
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  4. Gollapalli Nageswara Rao
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Correspondence to Parvataneni Vani.

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Annapurna, N., Kalyan Kumar, A., Vani, P. et al. Kinetics and mechanism of oxidation of l-cystine by manganese(III) in sulfuric acid medium. Transition Met Chem 33, 691–696 (2008). https://doi.org/10.1007/s11243-008-9097-4

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