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Article Dans Une Revue Transition Metal Chemistry Année : 1995

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

Denis Cronier
  • Fonction : Auteur
Gilles M Bouet
  • Fonction : Auteur
Francois Vierling
  • Fonction : Auteur

Résumé

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.

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Chimie
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Dates et versions

hal-03187756 , version 1 (08-04-2021)

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

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