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

Abstract

The kinetics of oxidation of L-cystine by Mn III have been studied in sulfuric acid medium at 30°C. The reaction was followed spectrophotometrically at kmax = 500 nm. The reaction shows first order dependence on both [Mn III ] 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.

Kinetics and Mechanism of Oxidation of L‐Cystine by Hexacyanoferrate(III) in Alkaline Medium

“…To have a further insight into it, we carried out kinetic investigations on the oxidation of L-cystine. In continuation to our earlier work 6,7 , we now report the oxidation of L-cystine by hexacyanoferrate(III)(HCF(III)) in alkaline medium.…”

A Mechanistic Study on the Oxidative Degradation of Dibenzazepine Derivatives by Manganese(III) Complexes in Acidic Sulfate Media

“…There have been a whole host of studies looking at the oxidation of the organic substances by the manganese(III) complexes with a range of mechanisms and reaction schemes [39][40][41][42][43][44][45][46][47]. The manganese(III) pyrophosphate [40,43,48] and other manganese(III) complexes were tested as potentially effective oxidants in many degradation processes [49,50].…”