Authors: Das, Asim K.; Saha, Bidyut; Islam, Monirul

Source: Progress in Reaction Kinetics and Mechanism, Volume 30, Number 3, 2005 , pp. 215-226(12)

Publisher: Science Reviews 2000 Ltd

Abstract:

The Cr^VI oxidation of a mixture of dimethyl sulfoxide (DMSO) and oxalic acid (OXH₂) in aqueous acid media occurs much faster than that of either of the two substrates alone (DMSO reacts extremely slowly under the experimental conditions). In the mixture, both substrates undergo oxidation simultaneously in a ternary complex of Cr^VI through a three electron transfer step (i.e. Cr^VI→Cr^III), two electrons from DMSO and one electron from oxalic acid. Hitherto there has been a debate regarding the existence of a 3e transfer in a single step. The micellar effect may be considered as a probe for 3e transfer in a single step.

Keywords: micellar effect; chromium(VI); oxalic acid; dimethyl sulfoxide; cetylpyridinium chloride; three-electron transfer

Document Type: Research article

DOI: http://dx.doi.org/10.3184/007967405779134047

Affiliations: 1: Department of Chemistry, Visva- Bharati University, Santiniketan-731235, West Bengal, India

Publication date: 2005-09-01

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• Progress in Reaction Kinetics & Mechanism is an international journal for the quarterly publication of both in-depth reviews and research articles.

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