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Violurato complexes of nickel(II). Formation equilibria. Deprotonation equilibria of the coordinated ligands and related stereochemical changes

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Summary

The formation equilibria of nickel(II) violurato-complexes in water and dimethylsulphoxide-water (80∶20) as well as deprotonation of the coordinated ligands and related stereochemical changes are reported. The stability constants of the Ni2+-H2V− complexes logβ1=5.06, Iogβ2=9.38, logβ3=12.98 as well as the acidity constants of the [Ni(H2V)3]− complex, logβj1= 8.37, logβj2=15.76, logβj3=22.37 are determined at 25 °C and 0.1M NaClO4. A new violurato-complex of Ni2+, Na4[Ni(HV)3]5H2O, is isolated and characterized.

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Authors and Affiliations

  1. Departamento de Química Inorgańica, Facultad de Química de la Universidad de Valencia, Spain

    Enrique García-España, José M. Moratal & J. Faus

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  1. Enrique García-España
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  2. José M. Moratal
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  3. J. Faus
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García-España, E., Moratal, J.M. & Faus, J. Violurato complexes of nickel(II). Formation equilibria. Deprotonation equilibria of the coordinated ligands and related stereochemical changes. Transition Met Chem 11, 1–5 (1986). https://doi.org/10.1007/BF01064490

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  • DOI: https://doi.org/10.1007/BF01064490

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