The important effect of ligand architecture on the selectivity of metal ion recognition in An (III)/Ln(III) separation with N-donor extractants.

Lydia Karmazin (1) , Marinella Mazzanti (1) , Christelle Gateau (1) , Clément Hill (2, 3) , Jacques Pécaut (4)

1 DRFMC - Département de Recherche Fondamentale sur la Matière Condensée
2 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
3 LCSE - Laboratoire de Chimie des Systèmes Extractants
4 SCIB - UMR E3 - Service de Chimie Inorganique et Biologique

The existence of a strong correlation between the ligand architecture and the metal ion binding selectivity is demonstrated through the large differences in the separation efficiencies found in the selective extraction of Am$^{3+}$ from an acidic mixture of Am$^{3+}$ and Eu$^{3+}$ for three new tetrapodal hexadentate ligands containing four 2-pyrazinyl-methyl groups attached to three different diamino spacers.

Keywords: selectivity of metal ion on; N-donor; extractants

Domains: Numerical Analysis [cs.NA]; Nuclear Experiment [nucl-ex]

Lydia Karmazin, Marinella Mazzanti, Christelle Gateau, Clément Hill, Jacques Pécaut. The important effect of ligand architecture on the selectivity of metal ion recognition in An (III)/Ln(III) separation with N-donor extractants.. Chemical Communications, 2002, 23, pp.2892-2893. ⟨10.1039/B209840G⟩. ⟨cea-02360128⟩