Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Formation of cobalt(II), nickel(II) and copper(II) chloro complexes in alcohols and the Irving-Williams order of stabilities

Abstract : Co II chloro complexes were studied in MeOH at 25 °C and at constant ionic strength of 1 mol dm−3. Formation of three complexes is postulated for which the overall stability constants are calculated: logβ 1 = 1.2, log β 2 = 1.7 and log β 3 = 1.4. The electronic spectra and the formation curves of the identified species are presented for the first time in this medium. The results are compared with those obtained in other alcohols and increasing stability with increasing molecular weight of the solvents is established. Further comparative study showed that the maximum stability of the chloro complexes is found with the CuII ion as the central atom. This confirms the Irving-Williams order of stabilities for the first transition metal complexes in this alcoholic medium and the result is explained in terms of the second ionization potential of the elements.
Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées

https://hal.univ-angers.fr/hal-03187764
Contributeur : Mustayeen Khan <>
Soumis le : jeudi 8 avril 2021 - 12:30:03
Dernière modification le : jeudi 8 avril 2021 - 15:05:09

Fichier

1996-Transition Met Chem-Musta...
Accord explicite pour ce dépôt

Identifiants

Collections

Citation

Mustayeen Khan, Gilles Bouet, Frangois Vierling, Jean Meullemeestre, Marie-José Sehwing. Formation of cobalt(II), nickel(II) and copper(II) chloro complexes in alcohols and the Irving-Williams order of stabilities. Transition Metal Chemistry, Springer Verlag, 1996, 21, pp.231-234. ⟨10.1007/BF00165973⟩. ⟨hal-03187764⟩

Partager

Métriques

Consultations de la notice

5

Téléchargements de fichiers

11