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Pruessmann T, Nagel P, Simonelli L, Batchelor D, Gordon R, Schimmelpfennig B, Trumm M, Vitova T. Opportunities and challenges of applying advanced X-ray spectroscopy to actinide and lanthanide N-donor ligand systems. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:53-66. [PMID: 34985423 PMCID: PMC8733980 DOI: 10.1107/s1600577521012091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
N-donor ligands such as n-Pr-BTP [2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine] preferentially bind trivalent actinides (An3+) over trivalent lanthanides (Ln3+) in liquid-liquid separation. However, the chemical and physical processes responsible for this selectivity are not yet well understood. Here, an explorative comparative X-ray spectroscopy and computational (L3-edge) study for the An/Ln L3-edge and the N K-edge of [An/Ln(n-Pr-BTP)3](NO3)3, [Ln(n-Pr-BTP)3](CF3SO3)3 and [Ln(n-Pr-BTP)3](ClO4)3 complexes is presented. High-resolution X-ray absorption near-edge structure (HR-XANES) L3-edge data reveal additional features in the pre- and post-edge range of the spectra that are investigated using the quantum chemical codes FEFF and FDMNES. X-ray Raman spectroscopy studies demonstrate the applicability of this novel technique for investigations of liquid samples of partitioning systems at the N K-edge.
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Affiliation(s)
- Tim Pruessmann
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Peter Nagel
- Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - Laura Simonelli
- ALBA Synchrotron Light Facility, Cerdanyola del Vallès 08290, Spain
| | - David Batchelor
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Robert Gordon
- PNCSRF, APS Sector 20, Argonne, IL 60439, USA
- Moyie Institute, Burnaby, BC, Canada
| | - Bernd Schimmelpfennig
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Michael Trumm
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Tonya Vitova
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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2
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Jian T, Yu X, Dan D, Albrecht-Schmitt TE, Autschbach J, Gibson JK. Gas-Phase Complexes of Americium and Lanthanides with a Bis-triazinyl Pyridine: Reactivity and Bonding of Archetypes for F-Element Separations. J Phys Chem A 2020; 124:2982-2990. [PMID: 32207621 DOI: 10.1021/acs.jpca.0c00675] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bis-triazinyl pyridines (BTPs) exhibit solution selectivity for trivalent americium over lanthanides (Ln), the origins of which remain uncertain. Here, electrospray ionization was used to generate gas-phase complexes [ML3]3+, where M = La, Lu, or Am and L is EtBTP 2,6-bis(5,6-diethyl-1,2,4-triazin-3-yl)-pyridine. Collision-induced dissociation (CID) of [ML3]3+ in the presence of H2O yielded a protonated ligand [L(H)]+ and hydroxide [ML2(OH)]2+ or hydrate [ML(L-H)(H2O)]2+, where (L-H)- is a deprotonated ligand. Although solution affinities indicate stronger binding of BTPs toward Am3+ versus Ln3+, the observed CID process is contrastingly more facile for M = Am versus Ln. To understand the disparity, density functional theory was employed to compute potential energy surfaces for two possible CID processes, for M = La and Am. In accordance with the CID results, both the rate determining transition state barrier and the net energy are lower for [AmL3]3+ versus [LaL3]3+ and for both product isomers, [ML2(OH)]2+ and [ML(L-H)(H2O)]2+. More facile removal of a ligand from [AmL3]3+ by CID does not necessarily contradict stronger Am3+-L binding, as inferred from solution behavior. In particular, the formation of new bonds in the products can distort kinetics and thermodynamics expected for simple bond cleavage reactions. In addition to correctly predicting the seemingly anomalous CID behavior, the computational results indicate greater participation of Am 5f versus La 4f orbitals in metal-ligand bonding.
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Affiliation(s)
- Tian Jian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Xiaojuan Yu
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - David Dan
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
| | - Thomas E Albrecht-Schmitt
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - John K Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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3
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Horne GP, Mezyk SP, Moulton N, Peller JR, Geist A. Time-resolved and steady-state irradiation of hydrophilic sulfonated bis-triazinyl-(bi)pyridines - modelling radiolytic degradation. Dalton Trans 2019; 48:4547-4554. [PMID: 30869725 DOI: 10.1039/c9dt00474b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Efficient separation of the actinides from the lanthanides is a critical challenge in the development of a more sophisticated spent nuclear fuel recycling process. Based upon the slight differences in f-orbital distribution, a new class of soft nitrogen-donor ligands, the sulfonated bis-triazinyl-(bi)pyridines, has been identified and shown to be successful for this separation under anticipated, large-scale treatment conditions. The radiation robustness of these ligands is key to their implementation; however, current stability studies have yielded conflicting results. Here we report on the radiolytic degradation of the sulfonated 2,6-bis(1,2,4-triazin-3-yl)pyridine (BTP(S)) and 6,6'-bis(1,2,4-triazin-3-yl)-2,2'-bipyridine (BTBP(S)) in aerated, aqueous solutions using a combination of time-resolved pulsed electron techniques to ascertain their reaction kinetics with key aqueous radiolysis products (eaq-, H˙, ˙OH, and ˙NO3), and steady state gamma radiolysis in conjunction with liquid chromatography for identification and quantification of both ligands as a function of absorbed dose. These data were used to construct a predictive deterministic model to provide critical insight into the fundamental radiolysis mechanisms responsible for the ligands' radiolytic stability. The first-order decays of BTP(S) and BTBP(S) are predominantly driven by oxidative processes (˙OH and, to a lesser extent, H2O2), for which calculations demonstrate that the rate of degradation is inhibited by the formation of ligand degradation products that undergo secondary reactions with the primary products of water radiolysis. Overall, BTP(S) is ∼20% more radiolytically stable than BTBP(S), but over 90% of either ligand is consumed within 1 kGy.
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Affiliation(s)
- Gregory P Horne
- Idaho National Laboratory, Center for Radiation Chemistry Research, Idaho Falls, ID, P.O. Box 1625, 83415, USA.
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4
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Comparative Study of Complexes of Rare Earths and Actinides with 2,6-Bis(1,2,4-triazin-3-yl)pyridine. INORGANICS 2019. [DOI: 10.3390/inorganics7030026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Complexes of group III metals (rare earth and actinides) with 2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine (BTP) have been investigated by computational (DFT) and, in limited cases, by experimental (FT-IR, X-ray) techniques with the goal of determining the characteristics of metal–ligand interactions. The DFT calculations using the M062X exchange-correlation functional revealed that metal–ligand distances correlate with the ionic radii of the metals, in agreement with available X-ray diffraction results on the Sc, Y, La, U, and Pu complexes. A related blue-shift trend could be observed in seven characteristic bands in the IR spectra associated with metal–ligand vibrations. The computations uncovered considerable charge transfer interactions, particularly in the actinide complexes, as important covalent contributions to the metal–ligand bonding. The covalent character of the metal–ligand bonds decreases in the actinides, from U to Cm.
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Fryer-Kanssen I, Austin J, Kerridge A. Topological Study of Bonding in Aquo and Bis(triazinyl)pyridine Complexes of Trivalent Lanthanides and Actinides: Does Covalency Imply Stability? Inorg Chem 2016; 55:10034-10042. [DOI: 10.1021/acs.inorgchem.6b00968] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Izaak Fryer-Kanssen
- Department of Chemistry, Lancaster University, Bailrigg,
Lancaster LA1 4YB, U.K
| | - Jonathan Austin
- National Nuclear Laboratory, Chadwick House, Birchwood Park, Warrington WA3 6AE, U.K
| | - Andrew Kerridge
- Department of Chemistry, Lancaster University, Bailrigg,
Lancaster LA1 4YB, U.K
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6
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Solution extraction of several lanthanides from nitric acid with isohexyl-BTP in [Cnmim][NTf2] ionic liquid. J RARE EARTH 2015. [DOI: 10.1016/s1002-0721(14)60544-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Lewis FW, Harwood LM, Hudson MJ, Geist A, Kozhevnikov VN, Distler P, John J. Hydrophilic sulfonated bis-1,2,4-triazine ligands are highly effective reagents for separating actinides(iii) from lanthanides(iii) via selective formation of aqueous actinide complexes. Chem Sci 2015; 6:4812-4821. [PMID: 29142716 PMCID: PMC5667576 DOI: 10.1039/c5sc01328c] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/27/2015] [Indexed: 11/21/2022] Open
Abstract
Tetrasulfonated bis-1,2,4-triazine ligands can selectively complex and separate actinides from lanthanides in aqueous nitric acid with very high selectivities.
We report the first examples of hydrophilic 6,6′-bis(1,2,4-triazin-3-yl)-2,2′-bipyridine (BTBP) and 2,9-bis(1,2,4-triazin-3-yl)-1,10-phenanthroline (BTPhen) ligands, and their applications as actinide(iii) selective aqueous complexing agents. The combination of a hydrophobic diamide ligand in the organic phase and a hydrophilic tetrasulfonated bis-triazine ligand in the aqueous phase is able to separate Am(iii) from Eu(iii) by selective Am(iii) complex formation across a range of nitric acid concentrations with very high selectivities, and without the use of buffers. In contrast, disulfonated bis-triazine ligands are unable to separate Am(iii) from Eu(iii) in this system. The greater ability of the tetrasulfonated ligands to retain Am(iii) selectively in the aqueous phase than the corresponding disulfonated ligands appears to be due to the higher aqueous solubilities of the complexes of the tetrasulfonated ligands with Am(iii). The selectivities for Am(iii) complexation observed with hydrophilic tetrasulfonated bis-triazine ligands are in many cases far higher than those found with the polyaminocarboxylate ligands previously used as actinide-selective complexing agents, and are comparable to those found with the parent hydrophobic bis-triazine ligands. Thus we demonstrate a feasible alternative method to separate actinides from lanthanides than the widely studied approach of selective actinide extraction with hydrophobic bis-1,2,4-triazine ligands such as CyMe4-BTBP and CyMe4-BTPhen.
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Affiliation(s)
- Frank W Lewis
- Department of Chemistry , The University of Reading , Whiteknights , Reading RG6 6AD , UK . .,Department of Applied Sciences , Faculty of Health and Life Sciences , Northumbria University , Newcastle upon Tyne NE1 8ST , UK .
| | - Laurence M Harwood
- Department of Chemistry , The University of Reading , Whiteknights , Reading RG6 6AD , UK .
| | - Michael J Hudson
- Department of Chemistry , The University of Reading , Whiteknights , Reading RG6 6AD , UK .
| | - Andreas Geist
- Karlsruher Institut für Technologie (KIT-INE) , Institut für Nukleare Entsorgung , Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen , Germany .
| | - Valery N Kozhevnikov
- Department of Applied Sciences , Faculty of Health and Life Sciences , Northumbria University , Newcastle upon Tyne NE1 8ST , UK .
| | - Petr Distler
- Department of Nuclear Chemistry , Czech Technical University in Prague , Břehová 7 , 115 19 Prague 1 , Czech Republic .
| | - Jan John
- Department of Nuclear Chemistry , Czech Technical University in Prague , Břehová 7 , 115 19 Prague 1 , Czech Republic .
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9
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Kratsch J, Beele BB, Koke C, Denecke MA, Geist A, Panak PJ, Roesky PW. 6-(Tetrazol-5-yl)-2,2′-bipyridine: A Highly Selective Ligand for the Separation of Lanthanides(III) and Actinides(III). Inorg Chem 2014; 53:8949-58. [DOI: 10.1021/ic5007549] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jochen Kratsch
- Institut
für Anorganische Chemie, Karlsruher Institut für Technologie, Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Björn B. Beele
- Physikalisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 253, 69120 Heidelberg, Germany
- Institut
für Nukleare Entsorgung, Karlsruher Institut für Technologie, P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Carsten Koke
- Physikalisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 253, 69120 Heidelberg, Germany
| | - Melissa A. Denecke
- Dalton Nuclear Institute, Pariser Building,
Floor G, Sackville Street, and The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Andreas Geist
- Institut
für Nukleare Entsorgung, Karlsruher Institut für Technologie, P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Petra J. Panak
- Physikalisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 253, 69120 Heidelberg, Germany
- Institut
für Nukleare Entsorgung, Karlsruher Institut für Technologie, P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Peter W. Roesky
- Institut
für Anorganische Chemie, Karlsruher Institut für Technologie, Engesserstrasse 15, 76131 Karlsruhe, Germany
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10
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McDonald LW, Campbell JA, Clark SB. Failure of ESI Spectra to Represent Metal-Complex Solution Composition: A Study of Lanthanide–Carboxylate Complexes. Anal Chem 2014; 86:1023-9. [DOI: 10.1021/ac401751r] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luther W. McDonald
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Chemical
and Biological Signature Sciences Group, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - James A. Campbell
- Chemical
and Biological Signature Sciences Group, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Sue B. Clark
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
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11
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Lewis FW, Harwood LM, Hudson MJ, Drew MGB, Hubscher-Bruder V, Videva V, Arnaud-Neu F, Stamberg K, Vyas S. BTBPs versus BTPhens: Some Reasons for Their Differences in Properties Concerning the Partitioning of Minor Actinides and the Advantages of BTPhens. Inorg Chem 2013; 52:4993-5005. [DOI: 10.1021/ic3026842] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frank W. Lewis
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Laurence M. Harwood
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Michael J. Hudson
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Michael G. B. Drew
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Véronique Hubscher-Bruder
- Université de Strasbourg, IPHC, 25 rue Becquerel 67087 Strasbourg, France CNRS, UMR7178,
67037 Strasbourg, France
| | - Vladimira Videva
- Université de Strasbourg, IPHC, 25 rue Becquerel 67087 Strasbourg, France CNRS, UMR7178,
67037 Strasbourg, France
| | - Françoise Arnaud-Neu
- Université de Strasbourg, IPHC, 25 rue Becquerel 67087 Strasbourg, France CNRS, UMR7178,
67037 Strasbourg, France
| | - Karel Stamberg
- Department of Nuclear Chemistry, Czech Technical University in Prague, Břehová 7, 11519 Prague 1,
Czech Republic
| | - Shyam Vyas
- National Nuclear Laboratory, Chadwick House, Warrington
Road, Warrington WA3 6AE, United Kingdom
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12
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Banik NL, Denecke MA, Geist A, Modolo G, Panak PJ, Rothe J. 2,6-Bis(5,6-dipropyl-1,2,4-triazin-3-yl)-pyridine: Structures of An(III) and Ln(III) 1:3 complexes and selectivity. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2012.11.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Panak PJ, Geist A. Complexation and Extraction of Trivalent Actinides and Lanthanides by Triazinylpyridine N-Donor Ligands. Chem Rev 2013; 113:1199-236. [DOI: 10.1021/cr3003399] [Citation(s) in RCA: 364] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Petra J. Panak
- Karlsruhe Institute of Technology,
Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe,
Germany
- Ruprecht-Karls-Universität
Heidelberg, Physikalisch Chemisches Institut (PCI), Im Neuenheimer
Feld 253, 69120 Heidelberg, Germany
| | - Andreas Geist
- Karlsruhe Institute of Technology,
Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe,
Germany
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14
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The Circuitous Journey from Malonamides to BTPhens. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/b978-0-08-099362-1.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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15
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Beele BB, Rüdiger E, Schwörer F, Müllich U, Geist A, Panak PJ. A TRLFS study on the complexation of novel BTP type ligands with Cm(iii). Dalton Trans 2013; 42:12139-47. [DOI: 10.1039/c3dt50536g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Ruff CM, Müllich U, Geist A, Panak PJ. Complexation of Cm(III) and Eu(III) with a hydrophilic 2,6-bis(1,2,4-triazin-3-yl)-pyridine studied by time-resolved laser fluorescence spectroscopy. Dalton Trans 2012; 41:14594-602. [PMID: 23018544 DOI: 10.1039/c2dt31748f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complexation of Cm(III) and Eu(III) with 2,6-bis(5,6-di(sulfophenyl)-1,2,4-triazin-3-yl)pyridine (aq-BTP) is studied in water at pH 3.0 applying time-resolved laser fluorescence spectroscopy. With increasing ligand concentration [M(H(2)O)(9-3n)(aq-BTP)(n)] (M = Cm(III)/Eu(III), n = 1, 2, 3) complex species are spectroscopically identified. The conditional stability constants of the M(III) 1 : 3 complex species with aq-BTP are log β(03) = 12.2 for Cm(III) and log β(03) = 10.2 for Eu(III). The complexation reaction is enthalpy- and entropy-driven for both metal ions, while the enthalpy change ΔH(03) is 9.7 kJ mol(-1) more negative for Cm(III); changes in ΔS(03) are marginal. The difference in ΔG(03) of -12.7 kJ mol(-1) between the formation of the [M(aq-BTP)(3)] complexes agrees with aq-BTP's selectivity in liquid-liquid extraction studies.
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Affiliation(s)
- Christian M Ruff
- Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, P. O. Box 3640, 76021 Karlsruhe, Germany.
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17
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Bhattacharyya A, Kim E, Weck PF, Forster PM, Czerwinski KR. Trivalent Actinide and Lanthanide Complexation of 5,6-Dialkyl-2,6-bis(1,2,4-triazin-3-yl)pyridine (RBTP; R = H, Me, Et) Derivatives: A Combined Experimental and First-Principles Study. Inorg Chem 2012; 52:761-76. [DOI: 10.1021/ic301881w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arunasis Bhattacharyya
- Department of Chemistry, University of Nevada—Las Vegas, Las Vegas, Nevada 89154,
United States
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400-085, India
| | - Eunja Kim
- Department of Physics and
Astronomy, University of Nevada—Las Vegas, Las Vegas, Nevada 89154, United States
| | - Philippe F. Weck
- Sandia National Laboratories, Albuquerque, New Mexico 87185-0747, United States
| | - Paul M. Forster
- Department of Chemistry, University of Nevada—Las Vegas, Las Vegas, Nevada 89154,
United States
| | - Kenneth R. Czerwinski
- Department of Chemistry, University of Nevada—Las Vegas, Las Vegas, Nevada 89154,
United States
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18
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Lewis FW, Harwood LM, Hudson MJ, Drew MGB, Sypula M, Modolo G, Whittaker D, Sharrad CA, Videva V, Hubscher-Bruder V, Arnaud-Neu F. Complexation of lanthanides, actinides and transition metal cations with a 6-(1,2,4-triazin-3-yl)-2,2':6',2''-terpyridine ligand: implications for actinide(III)/lanthanide(III) partitioning. Dalton Trans 2012; 41:9209-19. [PMID: 22729349 DOI: 10.1039/c2dt30522d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The quadridentate N-heterocyclic ligand 6-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-2,2' : 6',2''-terpyridine (CyMe(4)-hemi-BTBP) has been synthesized and its interactions with Am(III), U(VI), Ln(III) and some transition metal cations have been evaluated by X-ray crystallographic analysis, Am(III)/Eu(III) solvent extraction experiments, UV absorption spectrophotometry, NMR studies and ESI-MS. Structures of 1:1 complexes with Eu(III), Ce(III) and the linear uranyl (UO(2)(2+)) ion were obtained by X-ray crystallographic analysis, and they showed similar coordination behavior to related BTBP complexes. In methanol, the stability constants of the Ln(III) complexes are slightly lower than those of the analogous quadridentate bis-triazine BTBP ligands, while the stability constant for the Yb(III) complex is higher. (1)H NMR titrations and ESI-MS with lanthanide nitrates showed that the ligand forms only 1:1 complexes with Eu(III), Ce(III) and Yb(III), while both 1:1 and 1:2 complexes were formed with La(III) and Y(III) in acetonitrile. A mixture of isomeric chiral 2:2 helical complexes was formed with Cu(I), with a slight preference (1.4:1) for a single directional isomer. In contrast, a 1:1 complex was observed with the larger Ag(I) ion. The ligand was unable to extract Am(III) or Eu(III) from nitric acid solutions into 1-octanol, except in the presence of a synergist at low acidity. The results show that the presence of two outer 1,2,4-triazine rings is required for the efficient extraction and separation of An(III) from Ln(III) by quadridentate N-donor ligands.
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Affiliation(s)
- Frank W Lewis
- Department of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, UK.
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19
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Hudson MJ, Harwood LM, Laventine DM, Lewis FW. Use of Soft Heterocyclic N-Donor Ligands To Separate Actinides and Lanthanides. Inorg Chem 2012; 52:3414-28. [DOI: 10.1021/ic3008848] [Citation(s) in RCA: 216] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael J. Hudson
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
| | - Laurence M. Harwood
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
| | - Dominic M. Laventine
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
| | - Frank W. Lewis
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD,
U.K
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20
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Geist A, Müllich U, Magnusson D, Kaden P, Modolo G, Wilden A, Zevaco T. Actinide(III)/Lanthanide(III) Separation Via Selective Aqueous Complexation of Actinides(III) using a Hydrophilic 2,6-Bis(1,2,4-Triazin-3-Yl)-Pyridine in Nitric Acid. SOLVENT EXTRACTION AND ION EXCHANGE 2012. [DOI: 10.1080/07366299.2012.671111] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Bremer A, Ruff CM, Girnt D, Müllich U, Rothe J, Roesky PW, Panak PJ, Karpov A, Müller TJJ, Denecke MA, Geist A. 2,6-Bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine as a Ligand for Efficient Actinide(III)/Lanthanide(III) Separation. Inorg Chem 2012; 51:5199-207. [DOI: 10.1021/ic3000526] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antje Bremer
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
- Institut für Physikalische
Chemie, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 234, 69120 Heidelberg, Germany
| | - Christian M. Ruff
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
- Institut für Physikalische
Chemie, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 234, 69120 Heidelberg, Germany
| | - Denise Girnt
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Udo Müllich
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Jörg Rothe
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Peter W. Roesky
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Petra J. Panak
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
- Institut für Physikalische
Chemie, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 234, 69120 Heidelberg, Germany
| | - Alexei Karpov
- Institut für Organische
Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1,
40225 Düsseldorf, Germany
| | - Thomas J. J. Müller
- Institut für Organische
Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1,
40225 Düsseldorf, Germany
| | - Melissa A. Denecke
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
| | - Andreas Geist
- Institut für Nukleare Entsorgung, Karlsruher Institut für Technologie (KIT), P.O.
Box 3640, 76021 Karlsruhe, Germany
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Narbutt J, Oziminski WP. Selectivity of bis-triazinyl bipyridine ligands for americium(iii) in Am/Eu separation by solvent extraction. Part 1. Quantum mechanical study on the structures of BTBP complexes and on the energy of the separation. Dalton Trans 2012; 41:14416-24. [DOI: 10.1039/c2dt31503c] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Steppert M, Císařová I, Fanghänel T, Geist A, Lindqvist-Reis P, Panak P, Štěpnička P, Trumm S, Walther C. Complexation of Europium(III) by Bis(dialkyltriazinyl)bipyridines in 1-Octanol. Inorg Chem 2011; 51:591-600. [DOI: 10.1021/ic202119x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Steppert
- Institute for Nuclear Waste
Disposal, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Ivana Císařová
- Department of Inorganic
Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Praha 2, Czech Republic
| | - Thomas Fanghänel
- Institute for Transuranium Elements, European Commission, Joint Research Centre,
76125 Karlsruhe, Germany
- Physikalisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, 69047
Heidelberg, Germany
| | - Andreas Geist
- Institute for Nuclear Waste
Disposal, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Patric Lindqvist-Reis
- Institute for Nuclear Waste
Disposal, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Petra Panak
- Institute for Nuclear Waste
Disposal, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
- Physikalisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, 69047
Heidelberg, Germany
| | - Petr Štěpnička
- Department of Inorganic
Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Praha 2, Czech Republic
| | - Sascha Trumm
- Institute for Nuclear Waste
Disposal, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
- Physikalisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, 69047
Heidelberg, Germany
| | - Clemens Walther
- Institute for Nuclear Waste
Disposal, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany
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24
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Bhattacharyya A, Mohapatra PK, Gadly T, Raut DR, Ghosh SK, Manchanda VK. Liquid-liquid extraction and flat sheet supported liquid membrane studies on Am(III) and Eu(III) separation using 2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine as the extractant. JOURNAL OF HAZARDOUS MATERIALS 2011; 195:238-244. [PMID: 21889846 DOI: 10.1016/j.jhazmat.2011.08.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 07/13/2011] [Accepted: 08/10/2011] [Indexed: 05/31/2023]
Abstract
Solvent extraction and supported liquid membrane transport studies for the preferential removal of Am(3+) from feeds containing a mixture of Am(3+) and Eu(3+) was carried out using 2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine (n-Pr-BTP) as the extractant. Diluent plays an important role in these studies. It was observed that the distribution coefficients deteriorate significantly for both Am(3+) and Eu(3+) though the separation factors were affected only marginally. The transport studies were carried out at pH 2.0 in the presence of NaNO(3) to result in the preferential Am(3+) transport with high separation factors. Effect of different experimental parameters, viz. feed composition, stripping agents, diluents of the organic liquid membrane and membrane pore size was studied on the transport and separation behaviour of Am(3+) and Eu(3+). The supported liquid membrane studies indicated about 85% Am(3+) and 6% Eu(3+) transport in 6h using 0.03 M n-Pr-BTP in n-dodecane/1-octanol (7:3) diluent mixture for a feed containing 1M NaNO(3) at pH 2 and a receiver phase containing pH 2 solution as the strippant. Consequently, a permeability coefficient of (1.75 ± 0.21) × 10(-4)cms(-1) was determined for the Am(3+) transport. Stability of the n-Pr-BTP and its SLM was also studied by carrying out the distribution and transport experiment after different time intervals.
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Affiliation(s)
- A Bhattacharyya
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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25
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Trumm S, Lieser G, Panak PJ. Luminescence study on the solvation of Cm(III) in binary aqueous solvent mixtures. RADIOCHIM ACTA 2011. [DOI: 10.1524/ract.2011.1877] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
AbstractThe preferential solvation of Cm(III) in binary aqueous mixtures of MeOH,tBuOH, DMSO, MeCN and acetone is studied at varied solvent composition. Solvation is investigated by time-resolved laser fluorescence spectroscopy and emission spectra and fluorescence lifetime data are obtained. At high mole fractions of organic solvent, preferential solvation of Cm(III) increases in the order: Me2CO <tBuOH ≈ MeOH < MeCN < H2O < DMSO. Thermodynamic data are derived from the spectroscopic results showing small positive standard Gibbs energies for the transfer of Cm(III) into the various solvent mixtures except for DMSO mixtures where negative values are found. The spectroscopically obtained enthalpies of transfer are fitted to a solvation model using the model parameters Δ Δ Hº12and (αn+βN)º, rendering valuable information on the interaction of Cm(III) with the solvent molecules. Cm(III)-solvent interaction increases in the order:tBuOH < MeCN < MeOH < DMSO.
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Affiliation(s)
| | - G. Lieser
- Karlsruhe Institute of Technology, Institut für Anorganische Chemie, Karlsruhe, Deutschland
| | - Petra J. Panak
- Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, Karlsruhe, Deutschland
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26
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Lewis FW, Harwood LM, Hudson MJ, Drew MGB, Desreux JF, Vidick G, Bouslimani N, Modolo G, Wilden A, Sypula M, Vu TH, Simonin JP. Highly Efficient Separation of Actinides from Lanthanides by a Phenanthroline-Derived Bis-triazine Ligand. J Am Chem Soc 2011; 133:13093-102. [DOI: 10.1021/ja203378m] [Citation(s) in RCA: 268] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Frank W. Lewis
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Laurence M. Harwood
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Michael J. Hudson
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Michael G. B. Drew
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Jean F. Desreux
- Coordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, Belgium
| | - Geoffrey Vidick
- Coordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, Belgium
| | - Nouri Bouslimani
- Coordination and Radiochemistry, University of Liège, Sart Tilman B16, B-4000 Liège, Belgium
| | - Giuseppe Modolo
- Sicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - Andreas Wilden
- Sicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - Michal Sypula
- Sicherheitsforschung und Reaktortechnik, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - Trong-Hung Vu
- Laboratoire PECSA (UMR CNRS 7195), Université Pierre et Marie Curie, Case 51, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - Jean-Pierre Simonin
- Laboratoire PECSA (UMR CNRS 7195), Université Pierre et Marie Curie, Case 51, 4 Place Jussieu, 75252 Paris Cedex 05, France
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Trumm S, Geist A, Panak PJ, Fanghänel T. An Improved Hydrolytically-Stable Bis-Triazinyl-Pyridine (BTP) for Selective Actinide Extraction. SOLVENT EXTRACTION AND ION EXCHANGE 2011. [DOI: 10.1080/07366299.2011.539129] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Trumm S, Wipff G, Geist A, Panak PJ, Fanghänel T. Optimising BTP ligands by tuning their basicity. RADIOCHIM ACTA 2010. [DOI: 10.1524/ract.2011.1794] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
A novel approach for the optimisation of extractants for the actinide(III)/lanthanide(III) separation is presented. Two BTP ligands are synthesised carrying OMe or Cl moieties on the pyridine ring, thus altering the electronic structure of the aromatic system. The influence of functionalisation on the ligand basicity is determined both spectroscopically and by quantum chemical calculations. Furthermore, we show that both distribution ratios and separation factors for Am(III)/Eu(III) separation increase upon increase of ligand basicity.
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Affiliation(s)
- S. Trumm
- Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, Karlsruhe
| | - G. Wipff
- Laboratoire MSM, UMR CNRS 7177, Institut de Chimie, Strasbourg, Frankreich
| | | | - Petra J. Panak
- Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, Karlsruhe
| | - Thomas Fanghänel
- European Commission, Institute for Transuranium Elements, Karlsruhe
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29
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Trumm S, Panak PJ, Geist A, Fanghänel T. A TRLFS Study on the Complexation of CmIII and EuIII with 2,6-Bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine in Water/Methanol Mixture. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000230] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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