2,6-bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine as a ligand for efficient actinide(III)/lanthanide(III) separation
The N-donor complexing ligand 2,6-bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine (C5-BPP) was synthesized and screened as an extracting agent selective for trivalent actinide cations over lanthanides. C5-BPP extracts Am(III) from up to 1 mol/L HNO3 with a separation factor over Eu(III) of appro...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2012
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| In: |
Inorganic chemistry
Year: 2012, Jahrgang: 51, Heft: 9, Pages: 5199-5207 |
| ISSN: | 1520-510X |
| DOI: | 10.1021/ic3000526 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1021/ic3000526 Verlag, Volltext: https://doi.org/10.1021/ic3000526 
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| Verfasserangaben: | Antje Bremer, Christian M. Ruff, Denise Girnt, Udo Müllich, Jörg Rothe, Peter W. Roesky, Petra J. Panak, Alexei Karpov, Thomas J. J. Müller, Melissa A. Denecke, and Andreas Geist |
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| 245 | 1 | 0 | |a 2,6-bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine as a ligand for efficient actinide(III)/lanthanide(III) separation |c Antje Bremer, Christian M. Ruff, Denise Girnt, Udo Müllich, Jörg Rothe, Peter W. Roesky, Petra J. Panak, Alexei Karpov, Thomas J. J. Müller, Melissa A. Denecke, and Andreas Geist |
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| 520 | |a The N-donor complexing ligand 2,6-bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine (C5-BPP) was synthesized and screened as an extracting agent selective for trivalent actinide cations over lanthanides. C5-BPP extracts Am(III) from up to 1 mol/L HNO3 with a separation factor over Eu(III) of approximately 100. Due to its good performance as an extracting agent, the complexation of trivalent actinides and lanthanides with C5-BPP was studied. The solid-state compounds [Ln(C5-BPP)(NO3)3(DMF)] (Ln = Sm(III), Eu(III)) were synthesized, fully characterized, and compared to the solution structure of the Am(III) 1:1 complex [Am(C5-BPP)(NO3)3]. The high stability constant of log β3 = 14.8 ± 0.4 determined for the Cm(III) 1:3 complex is in line with C5-BPP’s high distribution ratios for Am(III) observed in extraction experiments. | ||
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