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Stracke J, Weßling P, Sittel T, Adam C, Rominger F, Geist A, Panak PJ. 2,6-Bis(5-( tert-butyl)-1 H-pyrazol-3-yl)pyridine: Effects of the Peripheral Aliphatic Side Chain on the Coordination of Actinides(III) and Lanthanides(III). Inorg Chem 2024; 63:13214-13222. [PMID: 38842049 DOI: 10.1021/acs.inorgchem.4c00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
To improve our understanding of the interaction mechanism in trivalent lanthanide and actinide complexes, studies with structurally different hard and soft donor ligands are of great interest. For that reason, the coordination chemistry of An(III) and Ln(III) with 2,6-bis(5-(tert-butyl)-1H-pyrazol-3-yl)pyridine (C4-BPP) has been explored. Time-resolved laser fluorescence spectroscopy (TRLFS) studies have revealed the formation of [Cm(C4-BPP)n]3+ (n = 1-3) (log β1' = 7.2 ± 0.4, log β2' = 10.1 ± 0.5, and log β3' = 11.8 ± 0.6) and [Eu(C4-BPP)m]3+ (m = 1-2) (log β1' = 4.9 ± 0.2 and log β2' = 8.0 ± 0.4). The absence of the [Eu(C4-BPP)3]3+ complex shows a more favorable complexation of Cm(III) over that of Eu(III). Additionally, complementary NMR measurements have been conducted to examine the M(III)-N bond in Ln(III) and Am(III) C4-BPP complexes. 15N NMR data have revealed notable differences in the chemical shifts of the coordinating nitrogen atoms between the Am(III) and Ln(III) complexes. In the Am(III) complex, the coordinating nitrogen atoms have shown a shift by 260 ppm, indicating a higher fraction of covalent bonding in the Am(III)-N bond compared with the Ln(III)-N bond. This observation aligns excellently with the differences in the stability constants obtained from TRLFS studies.
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Affiliation(s)
- Jonas Stracke
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, Karlsruhe 76021, Germany
- Institut für Physikalische Chemie, Heidelberg University, Im Neuenheimer Feld 253, Heidelberg 69120, Germany
| | - Patrik Weßling
- Institut für Physikalische Chemie, Heidelberg University, Im Neuenheimer Feld 253, Heidelberg 69120, Germany
| | - Thomas Sittel
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, Karlsruhe 76021, Germany
| | - Christian Adam
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, Karlsruhe 76021, Germany
| | - Frank Rominger
- Institut für Organische Chemie, Heidelberg University, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Andreas Geist
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, Karlsruhe 76021, Germany
| | - Petra J Panak
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, Karlsruhe 76021, Germany
- Institut für Physikalische Chemie, Heidelberg University, Im Neuenheimer Feld 253, Heidelberg 69120, Germany
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Wang L, Liu T. Transfer hydrogenation of ketones catalyzed by 2,6‐bis(triazinyl)pyridine ruthenium complexes: The influence of alkyl arms. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.150993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Bauer A, Jäschke A, Shams Aldin Azzam S, Glasneck F, Ullmann S, Kersting B, Brendler V, Schmeide K, Stumpf T. Multidentate extracting agents based on calix[4]arene scaffold – UVI/EuIII separation studies. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.12.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Maiwald MM, Wagner AT, Kratsch J, Skerencak-Frech A, Trumm M, Geist A, Roesky PW, Panak PJ. 4,4′-Di-tert-butyl-6-(1H-tetrazol-5-yl)-2,2′-bipyridine: modification of a highly selective N-donor ligand for the separation of trivalent actinides from lanthanides. Dalton Trans 2017; 46:9981-9994. [DOI: 10.1039/c7dt01864a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, the complexation and extraction behaviour of HN4tbubipy towards An(iii) and Ln(iii) is studied by spectroscopy, solvent extraction, and QM calculations.
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Affiliation(s)
- Martin M. Maiwald
- Physikalisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
- Institut für Nukleare Entsorgung (INE)
| | - Anna T. Wagner
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
| | - Jochen Kratsch
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
| | - Andrej Skerencak-Frech
- Physikalisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
- Institut für Nukleare Entsorgung (INE)
| | - Michael Trumm
- Institut für Nukleare Entsorgung (INE)
- Karlsruher Institut für Technologie (KIT)
- 76021 Karlsruhe
- Germany
| | - Andreas Geist
- Institut für Nukleare Entsorgung (INE)
- Karlsruher Institut für Technologie (KIT)
- 76021 Karlsruhe
- Germany
| | - Peter W. Roesky
- Institut für Anorganische Chemie
- Karlsruher Institut für Technologie (KIT)
- 76131 Karlsruhe
- Germany
| | - Petra J. Panak
- Physikalisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
- Institut für Nukleare Entsorgung (INE)
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Afsar A, Distler P, Harwood LM, John J, Westwood J. Extraction of minor actinides, lanthanides and other fission products by silica-immobilized BTBP/BTPhen ligands. Chem Commun (Camb) 2017; 53:4010-4013. [DOI: 10.1039/c7cc01286a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel BTBP [bis-(1,2,4-triazin-3-yl)-2,2′-bipyridine]/BTPhen [bis-(1,2,4-triazin-3-yl)-1,10-phenanthroline] functionalized silica gels have been developed to extract minor actinides, lanthanides and other fission products.
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Affiliation(s)
- Ashfaq Afsar
- Chemical Sciences
- University of Reading
- Berkshire RG6 6AD
- UK
| | - Petr Distler
- Department of Nuclear Chemistry
- Czech Technical University in Prague
- 11519 Prague 1
- Czech Republic
| | | | - Jan John
- Department of Nuclear Chemistry
- Czech Technical University in Prague
- 11519 Prague 1
- Czech Republic
| | - James Westwood
- Chemical Sciences
- University of Reading
- Berkshire RG6 6AD
- UK
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