Evaluation of kinetic parameters for oxidation of thioacids by benzimidazolium dichromate: A mechanistic study |
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Authors: | Dinesh Panday Harshita Jain Reena Kalal |
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Institution: | Department of Chemistry, M. L. Sukhadia University, Udaipur, 313001, India |
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Abstract: | In a non-aqueous medium, oxidation kinetics of thioglycolic, thiolactic and thiomalic acids by benzimidazolium dichromate have been studied. In the temperature range of 20°C–50°C, oxidation kinetics were examined by spectrophotometry. In terms of oxidant, the reaction is dependent on the unitary order. In the case of thioacids, we find the Michaelis-Menten type kinetics. Hydrogen-ions act as catalyst in this process. The reaction rate slows down as the Mn2+ ion concentration increases. The reaction does not cause acrylonitrile to polymerize. The formation of a thioester into the pre-equilibrium followed by its progressive degradation was postulated as a mechanism. |
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Keywords: | Kinetics Oxidation Thioacids Benzimidazolium dichromate Solvent effect Mechanism |
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