Exploring electronic effects on the partitioning of actinides(III) from lanthanides(III) using functionalised bis-triazinyl phenanthroline ligands
The first examples of 4,7-disubstituted 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzo-triazin-3-yl)-1,10-phenanthroline (CyMe4-BTPhen) ligands are reported herein. Evaluating the kinetics, selectivity and stoichiometry of actinide(III) and lanthanide(III) radiotracer extractions has pro...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
29 July 2016
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| In: |
Dalton transactions
Year: 2016, Volume: 45, Issue: 45, Pages: 18102-18112 |
| ISSN: | 1477-9234 |
| DOI: | 10.1039/C6DT02474B |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/C6DT02474B Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2016/dt/c6dt02474b 
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| Author Notes: | Alyn C. Edwards, Christoph Wagner, Andreas Geist, Neil A. Burton, Clint A. Sharrad, Ralph W. Adams, Robin G. Pritchard, Petra J. Panak, Roger C. Whitehead and Laurence M. Harwood |
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| 245 | 1 | 0 | |a Exploring electronic effects on the partitioning of actinides(III) from lanthanides(III) using functionalised bis-triazinyl phenanthroline ligands |c Alyn C. Edwards, Christoph Wagner, Andreas Geist, Neil A. Burton, Clint A. Sharrad, Ralph W. Adams, Robin G. Pritchard, Petra J. Panak, Roger C. Whitehead and Laurence M. Harwood |
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| 520 | |a The first examples of 4,7-disubstituted 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzo-triazin-3-yl)-1,10-phenanthroline (CyMe4-BTPhen) ligands are reported herein. Evaluating the kinetics, selectivity and stoichiometry of actinide(III) and lanthanide(III) radiotracer extractions has provided a mechanistic insight into the extraction process. For the first time, it has been demonstrated that metal ion extraction kinetics can be modulated by backbone functionalisation and a promising new CHON compliant candidate ligand with enhanced metal ion extraction kinetics has been identified. The effects of 4,7-functionalisation on the equilibrium metal ion distribution ratios are far more pronounced than those of 5,6-functionalisation. The complexation of Cm(III) with two of the functionalised ligands was investigated by TRLFS and, at equilibrium, species of 1 : 2 [M : L] stoichiometry were observed exclusively. A direct correlation between the ELUMO-EHOMO energy gap and metal ion extraction potential is reported, with DFT studies reaffirming experimental findings. | ||
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| 700 | 1 | |a Geist, Andreas |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Sharrad, Clint A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Adams, Ralph W. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pritchard, Robin G. |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Whitehead, Roger C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Harwood, Laurence M. |e VerfasserIn |4 aut | |
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