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Dalton Transactions
DOI: 10.1039/C6DT01800A
COMMUNICATION
Journal Name
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6. D. Allen, G. Baston, A. E. Bradley, T. Gorman, A. Haile, I.
Hamblett, J. E. Hatter, M. J. F. Healey, B. Hodgson, R. Lewin, K.
V. Lovell, B. Newton, W. R. Pitner, D. W. Rooney, D. Sanders, K.
R. Seddon, H. E. Sims and R. C. Thied, Green Chem., 2002, 4,
Conclusions
In
summary,
1,10-phenanthroline-2,9-dicarboxamides
bis
conjugated to imidazolium cations (Fig. 1) have been recognized as
selective and efficient agents for extracting trivalent ions of minor
actinides over lanthanides into imidazolium ionic liquid diluents
under the conditions that are relevant to nuclear cycle separations.
1
52-158.
1
7. I. A. Shkrob, T. W. Marin and J. F. Wishart, in Applications of
EPR in radiation research, ed. M. S. A. Lund, Springer,
Singapore, 2014, pp. 453-488.
These remarkable extractants (which can be alternatively 18. S. Panja, P. K. Mohapatra, S. C. Tripathi, P. M. Gandhi and P.
Janardan, Sep. Purif. Technol., 2012, 96, 289-295.
considered as task-specific ionic liquids) can also be used for the
group separation of light over heavy lanthanides, whereas the
corresponding neutral ligand exhibits the opposite trend. While
clearly more work is needed to rationalize these observations, the
striking differences observed between the neutral and dicationic
1
2
2
9. M. L. Dietz, Sep. Sci. Technol. , 2006, 41, 2047-2063.
0. D. Villemin and M. A. Didi, Orient. J. Chem., 29, 1267-1284.
1. I. L. Odinets, E. V. Sharova, O. I. Artyshin, K. A. Lyssenko, Y. V.
Nelyubina, G. V. Myasoedova, N. P. Molochnikova and E. A.
Zakharchenro, Dalton. Trans., 2010, 39, 4170-4178.
soft-N/hard-O ligands in ILs strongly imply tuning of the metal- 22. A. Sengupta, P. K. Mohapatra, R. M. Kadam, D. Manna, T. K.
ligand coordination through Coulomb interactions in the outer
sphere, and we suggest nitrate ligand addition as a possible cause
for the observed trends, including the complex ion size dependence
of the distribution ratios across the lanthanide period and the
uncommonly high Am/Eu selectivity.
Ghanty, M. Iqbal, J. Huskens and W. Verboom, RSC Adv., 2014,
4, 46613-46623.
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2
2
3. H. Luo, S. Dai, P. V. Bonnesen and A. C. Buchanan Iii, J. Alloys
Cmpd., 2006, 418, 195-199.
4. P. K. Mohapatra, A. Sengupta, M. Iqbal, J. Huskens and W.
Verboom, Chem. Eur. J., 2013, 19, 3230-3238.
5. M. Bonnaffe-Moity, A. Ouadi, V. Mazan, S. Miroshnichenko, D.
Ternova, S. Georg, M. Sypula, C. Gaillard and I. Billard, Dalton.
Trans., 2012, 41, 7526-7536.
Acknowledgements
2
6. A. Bhattacharyya, S. A. Ansari, T. Gadly, S. K. Ghosh, M.
Mohapatra and P. K. Mohapatra, Dalton. Trans., 2015, 44,
This work was supported by the US-DOE Office of Science, Division
of Chemical Sciences, Geosciences and Biosciences.
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193-6201.
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7. M. Galletta, S. Scaravaggi, E. Macerata, A. Famulari, A. Mele,
W. Panzeri, F. Sansone, A. Casnati and M. Mariani, Dalton.
Trans., 2013, 42, 16930-16938.
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