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Linkage isomerism, kinetics and electrochemistry of ruthenium-edta complexes of benzotriazole

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Abstract

The [RuIII(edta)(benzotriazole)]− complex has been investigated in aqueous solution, by means of cyclic voltammetry, stopped-flow kinetics and spectroelectrochemistry. The formation reaction, starting from [RuIII(edta)H2O]− and benzotriazole, leads essentially to the N(1) coordinated isomer. In the case of the RuII species, the products exhibit an intramolecular isomerization equilibrium involving the N(1) and N(2) binding sites, with K12=0.33. A complete set of acid/base and association constants has been obtained for the RuII and RuIII complexes. The data are coherent with theoretical calculations, reflecting the importance of π-backbonding interactions in the reduced species.

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Authors and Affiliations

  1. Instituto de Qui´mica, Universidade de Sa~o Paulo, Caixa Postal 26077, CEP 05599–970, Sa~o Paulo, SP, Brazil

    Reginaldo C. Rocha, Koiti Araki & Henrique E. Toma

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  1. Reginaldo C. Rocha
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  2. Koiti Araki
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  3. Henrique E. Toma
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Rocha, R.C., Araki, K. & Toma, H.E. Linkage isomerism, kinetics and electrochemistry of ruthenium-edta complexes of benzotriazole. Transition Metal Chemistry 23, 13–16 (1997). https://doi.org/10.1023/A:1006985329436

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