Статья

Highly Efficient Separation of Actinides from Lanthanides by a Phenanthroline-Derived Bis-triazine Ligand

Frank W. LewisDepartment of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.KLaurence M. HarwoodDepartment of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.KMichael J. HudsonDepartment of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.KMichael G. B. DrewDepartment of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.KJean F. DesreuxCoordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, BelgiumGeoffrey VidickCoordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, BelgiumN. BouslimaniCoordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, BelgiumGiuseppe ModoloSicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, GermanyAndreas WildenSicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, GermanyMichał SypułaSicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, GermanyTrong-Hung VuLaboratoire PECSA (UMR CNRS 7195), Université Pierre et Marie Curie, Case 51, 4 Place Jussieu, 75252 Paris Cedex 05, FranceJean‐Pierre SimoninLaboratoire PECSA (UMR CNRS 7195), Université Pierre et Marie Curie, Case 51, 4 Place Jussieu, 75252 Paris Cedex 05, France

2011en

ABI

Аннотация

The synthesis, lanthanide complexation, and solvent extraction of actinide(III) and lanthanide(III) radiotracers from nitric acid solutions by a phenanthroline-derived quadridentate bis-triazine ligand are described. The ligand separates Am(III) and Cm(III) from the lanthanides with remarkably high efficiency, high selectivity, and fast extraction kinetics compared to its 2,2'-bipyridine counterpart. Structures of the 1:2 bis-complexes of the ligand with Eu(III) and Yb(III) were elucidated by X-ray crystallography and force field calculations, respectively. The Eu(III) bis-complex is the first 1:2 bis-complex of a quadridentate bis-triazine ligand to be characterized by crystallography. The faster rates of extraction were verified by kinetics measurements using the rotating membrane cell technique in several diluents. The improved kinetics of metal ion extraction are related to the higher surface activity of the ligand at the phase interface. The improvement in the ligand's properties on replacing the bipyridine unit with a phenanthroline unit far exceeds what was anticipated based on ligand design alone.

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Идентификаторы

DOI: 10.1021/ja203378m

Цитирования и источники

Цитирований: 2Использованных источников: 0

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