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International Letters of Chemistry, Physics and Astronomy
Volume 59

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Reactivity of Phenol and Aniline towards Quinolinium Chloro Chromate: A Comparative Oxidation Kinetic Study

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Abstract:

The kinetics of Oxidation of Phenol and aniline by quinolinium Chlorochromate (QCC) in aqueous acetic acid medium leads to the formation of quinone and azobenzene respectively. The reactions are first order with respect to both Phenol and aniline. The reaction is first order with respect to quinolinium chlorochromate (QCC) and is catalyzed by hydrogen ion. The hydrogen-ion dependence has the form: kobs = a+b [H+]. The rate of oxidation decreases with increasing dielectric constant of solvent, indicating the presence of an ion-dipole interaction. The reaction does not induced the polymerization of acrylonitrile. The retardation of the rate by the addition of Mn2+ ions confirms that a two electron transfer process is involved in the reaction. The reaction rates have been determined at different temperatures and the activation parameters have been calculated. From the above observations kinetic results a probable mechanism have been proposed.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 59)
Pages:
81-92
DOI:
10.18052/www.scipress.com/ILCPA.59.81
Citation:
S. K. Periyasamy et al., "Reactivity of Phenol and Aniline towards Quinolinium Chloro Chromate: A Comparative Oxidation Kinetic Study", International Letters of Chemistry, Physics and Astronomy, Vol. 59, pp. 81-92, 2015
Online since:
Sep 2015
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