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Kinetics and mechanism of oxidation of primary alcohols by acidic solution of quinolinium fluorochromate in the presence of Ru(III) as homogeneous catalyst

Author(s): Sheila Srivastava*, Parul Srivastava

Themechanistic study of ruthenium(III)-catalyzed oxidation of n-hexanol and n-heptanol (primary alcohols) has been studied by quinolinium fluorochromate (QFC) in aqueous perchloric acid medium at 308 K. The reaction followed zero order kinetics with respect to [primary alcohols]. First-order kinetics with respect to [QFC] and [Ru(III)] were observed for the oxidation of primary alcohols. The variation of [H+],[Cl-] and ionic strength of the medium had no significant effect on the rate of the reaction. The values of rate constants observed at four different temperatures were utilized to calculate the activation parameters. The reaction between QFCand primary alcohols, in acidicmedium, exhibits 1:1 stoichiometry.A plausiblemechanismconforming to the kinetic results has been proposed.

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