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Synthesis and Screening of Modified 6,6'-Bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydrobenzo[e][1,2,4]triazin-3-yl)-2,2'-bipyridine Ligands for Actinide and Lanthanide Separation in Nuclear Waste Treatment

Ashfaq Afsar, Petr Distler, Laurence M Harwood, Jan John, James Westwood
Journal of Organic Chemistry 2016 November 4, 81 (21): 10517-10520
27463244
Effects of chloro and bromo substitution at the 4-position of the pyridine ring of 6,6'-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydrobenzo[e][1,2,4]triazin-3-yl)-2,2'-bipyridine (CyMe4 -BTBP) have been studied with regard to the extraction of Am(III) from Eu(III) and Cm(III) from 0.1-3 M HNO3 . Similarly to CyMe4 -BTBP, a highly efficient (DAm > 10 at 3 M HNO3 ) and selective (SFAm/Eu > 100 at 3 M HNO3 ) extraction was observed for Cl-CyMe4 -BTBP and Br-CyMe4 -BTBP in 1-octanol but in the absence of a phase-transfer agent.

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