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KMID : 1059520130570020210
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Journal of the Korean Chemical Society
2013 Volume.57 No. 2 p.210 ~ p.215
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A Kinetic Study on the Oxidation of Indole by Peroxomonosulphate in Acetonitrile Solvent
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Kavery Muniyappan
Govindasamy Chandramohan
Johnson Stephen
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Abstract
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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.
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KEYWORD
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Kinetics, Mechanism, Oxidation, Indole, Peroxomonosulphate (PMS)
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