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Kinetics of the reduction of tetrakis (2,2′-bipyridine)-μ-oxo-di-iron(III) by 1,3-benzenediol in aqueous acidic medium

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Abstract

The stoichiometry and kinetics of the reduction of Fe2(III)(bpy)4OCl4 by 1,3-benzenediol have been investigated in aqueous hydrochloric acid medium. The reaction is first order in [oxidant] but zero order in [reductant]. There is no evidence for the formation of an intermediate complex of significant stability. The presence of NO3 − or ClO4 − had no effect on the rate of the reaction. Also, the reaction rate is not affected by the changes in the ionic strength and dielectric constant of the reaction media. A plausible mechanism involving an outer-sphere complex formed via an ion pair is proposed for the reaction.

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Acknowledgement

We express our appreciation to Ahmadu Bello University, Zaria for the research facilities granted to Sulaiman O. Idris.

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

    Sulaiman O. Idris, Johnson F. Iyun & Edith B. Agbaji

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  1. Sulaiman O. Idris
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  2. Johnson F. Iyun
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  3. Edith B. Agbaji
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Correspondence to Sulaiman O. Idris.

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Idris, S.O., Iyun, J.F. & Agbaji, E.B. Kinetics of the reduction of tetrakis (2,2′-bipyridine)-μ-oxo-di-iron(III) by 1,3-benzenediol in aqueous acidic medium. Transition Met Chem 34, 205–208 (2009). https://doi.org/10.1007/s11243-008-9179-3

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