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Ruthenium(III)-catalysed oxidation of thiocyanate by periodate in aqueous alkaline medium; autocatalysis in catalysis

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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.

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Authors and Affiliations

  1. P.G. Department of Studies in Chemistry, Karnatak University, Dharwad, 580003, India

    Sharanappa T. Nandibewoor, Gouri A. Hiremath & Prakash L. Timmanagoudar

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  1. Sharanappa T. Nandibewoor
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  2. Gouri A. Hiremath
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  3. Prakash L. Timmanagoudar
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Nandibewoor, S.T., Hiremath, G.A. & Timmanagoudar, P.L. Ruthenium(III)-catalysed oxidation of thiocyanate by periodate in aqueous alkaline medium; autocatalysis in catalysis. Transition Metal Chemistry 25, 394–399 (2000). https://doi.org/10.1023/A:1007084709817

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