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Kinetics and Mechanisms of Redox Reactions in Aqueous Solution. Part 6. Oxidation of Cyclohexanone by Aquamanganese(III) Ions in Aqueous Perchloric Acid

DOI: 10.1039/DT9810000581

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Journal of the Chemical Society, Dalton Transactions p. 581 - 585 (1981)

Update date:2022-08-30

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Authors:

Nagori, Ratan RajNagori, Ratan Raj

Mehta, MahendraMehta, Mahendra

Mehrotra, Raj NarainMehrotra, Raj Narain

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Article abstract of DOI:10.1039/DT9810000581

The rate of the title reaction has a first-order dependence both on Mn(III) and cyclohexanone.The rate is retarded by increasing but unaffected by Mn(II).Unlike the oxidations by manganese(III) pyrophosphate and manganese(III) acetate, in which the enolic form was oxidised, the oxidation of cyclohexanone by aquamanganese(III) ions is found to be much faster than the rate of enolisation.An outer-sphere mechanism is suggested.The rate constants corresponding to the oxidation effected by Mn(3+)(aq) and (2+)(aq) are separated and the associated thermodynamic parameters discussed.

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