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Electron transfer at tetrahedral cobalt(II), Part III: kinetics of copper(II) ion catalysed reduction of periodate

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Summary

The stoichiometry, kinetics and mechanisms of copper(II)-catalysed reduction of periodate ion by the dodecatung-stocobaltate(II) anion in aqueous HClO4 has been investigated. The reaction follows the empirical rate law: d[Reductant]/dt=2(a+b [H+]) [Cu11] [oxidant] [Reductant] wherea=1.47±0.07×10−4 M−2 s−1 b=1.90±0.05×10−4 M−3 s−1 at 24.5±0.1°C [H+]=0.02–0.20 M and I=0.50 M (NaClO4). This is, to our knowledge, the first example of an outer-sphere reduction of periodate by a metal complex in aqueous solution.

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  1. Godwin Adefikayo Ayoko

    Present address: Department of Chemistry, University of Papua New Guinea, P O Box 320, PNG

Authors and Affiliations

  1. Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria

    Godwin Adefikayo Ayoko, Johnson Femi Iyun & Ibrahim Faskari El-Idris

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  1. Godwin Adefikayo Ayoko
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  2. Johnson Femi Iyun
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  3. Ibrahim Faskari El-Idris
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TMC 2602

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Ayoko, G.A., Iyun, J.F. & El-Idris, I.F. Electron transfer at tetrahedral cobalt(II), Part III: kinetics of copper(II) ion catalysed reduction of periodate. Transition Met. Chem. 17, 423–425 (1992). https://doi.org/10.1007/BF02910723

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  • DOI: https://doi.org/10.1007/BF02910723

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