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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 57, Number 2
JKCSEZ 57(2)
April 20, 2013 

 
Title
A Kinetic Study on the Oxidation of Indole by Peroxomonosulphate in Acetonitrile Solvent
Author
Muniyappan Kavery*, Chandramohan Govindasamy, Stephen Johnson
Keywords
Kinetics, Mechanism, Oxidation, Indole, Peroxomonosulphate (PMS)
Abstract
Kinetics of oxidation of indole by peroxomonosulphate (PMS) in aqueous acetonitrile medium has been investigated. The reaction follows a total second order, first order each with respect to [Indole] and [PMS]. The rate of the reaction was not affected by added [H+]. Variation of ionic strength (μ) had no influence on the rate. Increase of percentage of acetonitrile decreased the rate. Absen ce of any polymerization indicated a nonradical pathway. Activation and thermodynamic parameters have bee n computed. A suitable kinetic scheme based on these observations is proposed. The reactivity of PMS towards Indole was found to be higher than that with peroxodisulphate.
Page
210 - 215
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