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

doi:10.1021/acs.joc.6b01264

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

J Org Chem. 2016 Nov 4;81(21):10517-10520. doi: 10.1021/acs.joc.6b01264. Epub 2016 Aug 15.

Authors

Ashfaq Afsar¹, Petr Distler², Laurence M Harwood¹, Jan John², James Westwood¹

Affiliations

¹ School of Chemistry, University of Reading , Whiteknights, Reading, Berkshire RG6 6AD, U.K.
² Department of Nuclear Chemistry, Czech Technical University in Prague , Břehová 7, 11519 Prague 1, Czech Republic.

PMID: 27463244
DOI: 10.1021/acs.joc.6b01264

Abstract

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 (D_Am > 10 at 3 M HNO₃) and selective (SF_Am/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.

Publication types

Research Support, Non-U.S. Gov't