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Barāgaon, India

Kumar A.,Sb Postgraduate College | Singh A.,Sb Postgraduate College | Singh K.K.,Sb Postgraduate College
Asian Journal of Chemistry | Year: 2010

The kinetic study of osmium tetroxide catalyzed oxidation of 2-methyl butanol-1 by aqueous alkaline solution of N-chlorosuccinimide shows first-order kinetics with respect to each [N-chlorosuccinimide], [Os(VIII)] and [OH-] and zero order kinetics with respect to [2-methyl butanol-1]. Negligible effect of variation of ionic strength of the medium on the rate of the reaction was observed. Addition of succinimide and mercuric acetate did not affect the rate constant of the reaction. Activation parameter, Ea, ΔS # and ΔG # were calculated by the rate contents observed of 30, 35, 40 and 45 °C. A suitable mechanism in agreement with kinetic observation was proposed. Source


Kumar A.,Sb Postgraduate College | Singh A.,Sb Postgraduate College
Asian Journal of Chemistry | Year: 2010

Kinetics of Os(VIII) catalyzed oxidation of 2-methyl propanol-1 by N-chlorosuccinimide in aqueous alkaline medium have been investigated in the temperature range 30, 35, 40 and 45 °C. The reaction exhibited first-order in [N-chlorosuccinimide](NCS), [Os(VIII)] and [OH] and zero order in [2-methyl propanol-1]. Negligible effects of added product, succinimide and mercuric acetate on the reaction rate were observed. The variation of ionic strength of the medium showed zero effect on the reaction rate. The mechanism involving the [OsO 4(OH) 2] 2- ion as the reactive species of the catalyst and N-chlorosuccinimide, the oxidant in the slow and rate determining step has been suggested. Source

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