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Thermodynamics of complex formation of 1-methylimidazole with cobalt(II), nickel(II), copper(II) and zinc(II) cations in aqueous solution

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Summary

The enthalpies of the first step of complex formation of 1-methylimidazole with CoII, NiII, CuII and ZnII have been determined by direct calorimetry. By means of the equilibrium constants, the Gibbs functions and entropies were also obtained. The measurements were carried out in aqueous medium, at 25 °C and an ionic strength I=1 mol dm−3 (NaNO3). The present results and the previous thermodynamic data for associations of pyrazole and imidazole are used to infer the quality of the metal-ligand bonds and particularly their π-character.

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Authors and Affiliations

  1. Institute of Analytical Chemistry, University of Turin, via Giuria 5, 10125, Turin, Italy

    Roberto Aruga

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  1. Roberto Aruga
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Aruga, R. Thermodynamics of complex formation of 1-methylimidazole with cobalt(II), nickel(II), copper(II) and zinc(II) cations in aqueous solution. Transition Met Chem 8, 56–58 (1983). https://doi.org/10.1007/BF00618801

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  • DOI: https://doi.org/10.1007/BF00618801

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