Highly efficient separation of actinides from lanthanides by a phenanthroline-derived bis-triazine ligand

Lewis, Frank, Harwood, Laurence, Hudson, Michael, Drew, Michael, Desreux, Jean, Vidick, Geoffrey, Bouslimani, Nouri, Modolo, Giuseppe, Wilden, Andreas, Sypula, Michal, Vu, Trong and Simonin, Jean (2011) Highly efficient separation of actinides from lanthanides by a phenanthroline-derived bis-triazine ligand. Journal of the American Chemical Society, 133 (33). pp. 13093-13102. ISSN 0002-7863

[img]
Preview
PDF (Article)
CyMe4-BTPhen_Paper_4.pdf - Submitted Version

Download (1MB) | Preview
Official URL: http://dx.doi.org/10.1021/ja203378m

Abstract

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 is 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 ligands properties on replacing the bipyridine unit with a phenanthroline unit far exceeds what was anticipated based on ligand design alone.

Item Type: Article
Subjects: F100 Chemistry
Department: Faculties > Health and Life Sciences > School of Life Sciences > Applied Sciences
Depositing User: Frank Lewis
Date Deposited: 02 Jan 2013 10:19
Last Modified: 12 May 2017 14:43
URI: http://nrl.northumbria.ac.uk/id/eprint/10881

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence