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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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Bibliographische Detailangaben
Hauptverfasser: Bremer, Antje (VerfasserIn) , Ruff, Christian (VerfasserIn) , Panak, Petra (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2012
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
Volltext
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
Beschreibung
Zusammenfassung: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.
Beschreibung:Published: April 19, 2012
Gesehen am 28.06.2018
Beschreibung:Online Resource
ISSN:1520-510X
DOI:10.1021/ic3000526

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