Kinetics of oxidation of vitamin-B3 (Niacin) by sodium N-bromo benzenesulphonamide (Bromamine-B) in HCl medium and catalysis by Ru(III) ion

Chandrashekar and Venkatesha, B. M. and Ananda (2012) Kinetics of oxidation of vitamin-B3 (Niacin) by sodium N-bromo benzenesulphonamide (Bromamine-B) in HCl medium and catalysis by Ru(III) ion. Research Journal of Chemical Sciences, 2 (8). pp. 26-30. ISSN 2231 - 606X

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Abstract

Kinetics of uncatalyzed and Ru(III) catalyzed oxidation of vitamin-B3 (niacin) by the titled compound (bromamine-B) in HCl medium has been studied at 303K. The uncatalyzed reaction shows a first order dependence of the rate on (BAB) and (vitamin-B3), inverse fractional order in (acid). The Ru(III) Catalyzed reaction on the other hand shows a first order behavior on each of (BAB) and (vitaminB3), fractional order dependence on Ru(III) and inverse fractional order in (acid). The reaction rate shows inverse fractional order (benzenesulphonamide) in both uncatalyzed and Ru(III) ion catalyzed reactions. Addition of halide ions, variation of ionic strength and dielectric constant of the medium had no effect on the reaction rate. Activation parameters have been evaluated from the arrhenius plots, mechanisms consistent with the above kinetic data have been proposed.

Item Type:	Article
Subjects:	C Chemical Science > Chemistry
Divisions:	Department of > Chemistry
Depositing User:	C Swapna Library Assistant
Date Deposited:	20 Aug 2019 05:11
Last Modified:	20 Aug 2019 05:11
URI:	http://eprints.uni-mysore.ac.in/id/eprint/6789

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