From BTBPs to BTPhens: The Effect of Ligand Pre-Organization on the Extraction Properties of Quadridentate Bis-Triazine Ligands

The synthesis, lanthanide complexation and solvent extraction of An(III) and Ln(III) radiotracers from nitric acid solutions by a pre-organized, phenanthroline-derived bis-triazine ligand CyMe4-BTPhen are described. It was found that the ligand separated Am(III) and Cm(III) from the lanthanides with...

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Bibliographic Details
Published in:Procedia chemistry 2012, Vol.7, p.231-238
Main Authors: Lewis, Frank W., Harwood, Laurence M., Hudson, Michael J., Drew, Michael G.B., Wilden, Andreas, Sypula, Michal, Modolo, Giuseppe, Vu, Trong-Hung, Simonin, Jean-Pierre, Vidick, Geoffrey, Bouslimani, Nouri, Desreux, Jean F.
Format: Article
Language:English
Subjects:
Americium
Extraction
Ligand
N-heterocycle
Partitioning
SANEX
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Summary:The synthesis, lanthanide complexation and solvent extraction of An(III) and Ln(III) radiotracers from nitric acid solutions by a pre-organized, phenanthroline-derived bis-triazine ligand CyMe4-BTPhen are described. It was found that the ligand separated Am(III) and Cm(III) from the lanthanides with remarkably high efficiency, high selectivity, and faster extraction kinetics compared to its 2,2’-bipyridine counterpart CyMe4-BTBP. The origins of the ligands extraction properties were established by a combination of solvent extraction experiments, X-ray crystallography, kinetics and surface tension measurements and lanthanide NMR spectroscopy.
ISSN:1876-6196
1876-6196
DOI:10.1016/j.proche.2012.10.038