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Spectrophotometric investigation of nickel(II) chloro complexes in alcoholic solutions

Abstract : A spectrophotometric study of Ni n chloro complexes in the u.v.-vis, region was carried out at 25 ~ and constant ionic strength of 1 mol dm-3. A matrix rank treatment method was used to identify two successive mononuclear complexes, NiC1 + and NiC12, in the three alcohols studied viz. MeOH, EtOH and i-PrOH. The best values for the apparent overall stability constants, fit, were calculated using a program based on the least-squares method. The log fil and log [t 2 values in MeOH, EtOH and i-PrOH are 1.3 and 1.2, 1.7 and 1.8, and 1.9 and 2.2, respectively. The stability increases directly with the mol. wt. of the solvent, or decreases as a linear function of the permittivity of the pure solvent. The electronic spectra and the formation curves of the two complexes in MeOH solutions were calculated.
Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées
Contributeur : Mustayeen Khan <>
Soumis le : jeudi 8 avril 2021 - 12:27:41
Dernière modification le : jeudi 8 avril 2021 - 15:04:07


1995-Transition Met Chem-Musta...
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Mustayeen Khan, Denis Cronier, Gilles Bouet, Francois Vierling. Spectrophotometric investigation of nickel(II) chloro complexes in alcoholic solutions. Transition Metal Chemistry, Springer Verlag, 1995, 20, pp.369-371. ⟨10.1007/BF00139132⟩. ⟨hal-03187756⟩



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