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Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2003

Iron(III) chelation: Tuning of the pH dependence by mixed ligands

A.-M. Albrecht-Gary
  • Fonction : Auteur
F. Biaso
  • Fonction : Auteur
F. Thomas
  • Fonction : Auteur
P. Baret
  • Fonction : Auteur
G. Gellon
  • Fonction : Auteur
G. Serratrice
  • Fonction : Auteur

Résumé

The iron(III) chelating properties of two heteropodands with 8-hydroxyquinoline and catechol binding groups were examined and compared to those of the corresponding homopodal analogues, O-TRENSOX and TRENCAMS. Like the parent homopodands, the two heteropodands are based on the TREN scaffold and the chelating units are connected by amide groups, TRENSOX2CAMS having two 8-hydroxyquinoline and one catechol arms and TRENSOXCAMS2 one 8-hydroxyquinoline and two catechol moieties. The aqueous coordination chemistry of these ligands was examined by potentiometric and spectrophotometric methods in combination with 1H NMR spectroscopy. The respective pFeIII values showed a cooperative effect of the mixed chelating units. Moreover, the pFeIII dependence on pH showed that the mixed ligands exhibit a higher complexing ability than the parent ligands over the pH range 5-9 which is of biological relevance. This result could be of great interest for medical applications.

Dates et versions

hal-01458134 , version 1 (06-02-2017)

Identifiants

Citer

A.-M. Albrecht-Gary, Sylvie Blanc, F. Biaso, F. Thomas, P. Baret, et al.. Iron(III) chelation: Tuning of the pH dependence by mixed ligands. European Journal of Inorganic Chemistry, 2003, 14, pp.2596-2605. ⟨10.1002/ejic.200200643⟩. ⟨hal-01458134⟩
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