Ruthenium(III)-catalysed oxidation of thiocyanate by periodate in aqueous alkaline medium; autocatalysis in catalysis |
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| Authors: | Nandibewoor Sharanappa T. Hiremath Gouri A. Timmanagoudar Prakash L. |
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| Affiliation: | (1) P.G. Department of Studies in Chemistry, Karnatak University, Dharwad, 580003, India |
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| Abstract: | The oxidation of thiocyanate by periodate has been studied in alkaline media. A micro quantity of RuIII is sufficient to catalyse the reaction. The active catalytic species and oxidant in the reaction are understood to be [Ru(H2O)5OH]2+ and IO− 4. The autocatalysis exhibited by one of the products, cyanate, is attributed to adduct formation between cyanate and periodate. A composite mechanism and rate law are proposed. The reaction constants involved in the mechanism are evaluated. This revised version was published online in June 2006 with corrections to the Cover Date. |
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