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Hall GB, Campbell EL, Bessen NP, Graham TR, Cho H, RisenHuber M, Heller FD, Lumetta GJ. Extraction of Nitric Acid and Uranium with DEHiBA under High Loading Conditions. Inorg Chem 2023; 62:6711-6721. [PMID: 37058585 DOI: 10.1021/acs.inorgchem.3c00288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
The mechanism by which high concentrations (1.5 M in n-dodecane) of N,N-di-2-ethylhexyl-isobutyramide (DEHiBA) extracts HNO3 and UO2(NO3)2 is under examination. Most prior studies have examined the extractant and the mechanism at a concentration of 1.0 M in n-dodecane; however, under the higher loading conditions that can be achieved by a higher concentration of extractant, this mechanism could change. Increased extraction of both nitric acid and uranium is observed with an increased concentration of DEHiBA. The mechanisms are examined by thermodynamic modeling of distribution ratios, 15N nuclear magnetic resonance (NMR) spectroscopy, and Fourier transform infrared (FTIR) spectroscopy coupled with principal component analysis (PCA). Speciation diagrams produced through thermodynamic modeling have been qualitatively reproduced through PCA of the FTIR spectra. The predominant extracted species of HNO3(DEHiBA), HNO3(DEHiBA)2, and UO2(NO3)2(DEHiBA)2 are in good agreement with prior literature reports for 1.0 M DEHiBA systems. Evidence for an additional species of either UO2(NO3)2(DEHiBA) or UO2(NO3)2(DEHiBA)2(HNO3) also contributing to the extraction of uranium species is given.
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Affiliation(s)
- Gabriel B Hall
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Emily L Campbell
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Nathan P Bessen
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Trent R Graham
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Herman Cho
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Matthew RisenHuber
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Forrest D Heller
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Gregg J Lumetta
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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A comparison on the use of DEHBA or TBP as extracting agent for tetra- and hexavalent actinides in the CHALMEX Process. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08481-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
AbstractThe Chalmers Grouped ActiNide EXtraction process is a solvent extraction process for the homogeneous recycling of spent nuclear fuel. The use of TBP for the extraction of tetra- and hexavalent actinides can be problematic for several reasons, including troublesome degradation products causing crud formation, decreased extraction yield and the possibility of explosive red oil reactions. Here, the substitution of TBP by a N,N-dialkyl monoamide, DEHBA, is investigated. The findings suggest that DEHBA can be a suitable extracting agent for use in the CHALMEX solvent, although identified drawbacks need to be further investigated.
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Yuan X, Visscher L, Gomes ASP. Assessing MP2 frozen natural orbitals in relativistic correlated electronic structure calculations. J Chem Phys 2022; 156:224108. [PMID: 35705406 DOI: 10.1063/5.0087243] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The high computational scaling with the basis set size and the number of correlated electrons is a bottleneck limiting applications of coupled cluster algorithms, in particular for calculations based on two- or four-component relativistic Hamiltonians, which often employ uncontracted basis sets. This problem may be alleviated by replacing canonical Hartree-Fock virtual orbitals by natural orbitals (NOs). In this paper, we describe the implementation of a module for generating NOs for correlated wavefunctions and, in particular, second order Møller-Plesset perturbation frozen natural orbitals (MP2FNOs) as a component of our novel implementation of relativistic coupled cluster theory for massively parallel architectures [Pototschnig et al. J. Chem. Theory Comput. 17, 5509, (2021)]. Our implementation can manipulate complex or quaternion density matrices, thus allowing for the generation of both Kramers-restricted and Kramers-unrestricted MP2FNOs. Furthermore, NOs are re-expressed in the parent atomic orbital (AO) basis, allowing for generating coupled cluster singles and doubles NOs in the AO basis for further analysis. By investigating the truncation errors of MP2FNOs for both the correlation energy and molecular properties-electric field gradients at the nuclei, electric dipole and quadrupole moments for hydrogen halides HX (X = F-Ts), and parity-violating energy differences for H2Z2 (Z = O-Se)-we find MP2FNOs accelerate the convergence of the correlation energy in a roughly uniform manner across the Periodic Table. It is possible to obtain reliable estimates for both energies and the molecular properties considered with virtual molecular orbital spaces truncated to about half the size of the full spaces.
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Affiliation(s)
- Xiang Yuan
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Lucas Visscher
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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Chupin G, Tamain C, Dumas T, Solari PL, Moisy P, Guillaumont D. Characterization of a Hexanuclear Plutonium(IV) Nanostructure in an Acetate Solution via Visible-Near Infrared Absorption Spectroscopy, Extended X-ray Absorption Fine Structure Spectroscopy, and Density Functional Theory. Inorg Chem 2022; 61:4806-4817. [PMID: 35289606 DOI: 10.1021/acs.inorgchem.1c02876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new hexanuclear plutonium cluster has been stabilized in aqueous media with acetate ligands. To probe the formation of such a complex structure, visible-near infrared (vis-NIR) absorption spectroscopy, extended X-ray absorption fine structure (EXAFS) spectroscopy, and density functional theory (DFT) were combined. The presence of Pu6O4(OH)4(CH3COO)12 species in solution was first detected by vis-NIR and EXAFS spectroscopy. To confirm unambiguously this structure, EXAFS spectra were simulated from ab initio calculations. Debye-Waller factors and structural parameters were derived from DFT calculations. A large number of 5f electrons were treated as valence or core electrons using small- and large-core relativistic effective pseudopotentials. It is possible to reproduce accurately the EXAFS spectrum of the octahedral hexamer cluster at both levels of calculations. Further DFT and EXAFS calculations were performed on clusters of lower or higher nuclearities and of different geometries using the 5f-core approximation. The result shows that trimer, tetramer, flat hexamer, and even 16-mer clusters exhibit different EXAFS patterns and confirm the very specific octahedral hexanuclear EXAFS signature.
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Affiliation(s)
- Geoffroy Chupin
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Christelle Tamain
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, 91192 Gif sur Yvette, France
| | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
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Coquil M, Boubals N, Duvail M, Charbonnel MC, Dufrêche JF. On interactions in binary mixtures used in solvent extraction: Insights from combined Isothermal Titration Calorimetry experiments and Molecular Dynamics simulations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.116985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Husar R, Dumas T, Schlegel ML, Schlegel D, Guillaumont D, Solari PL, Moisy P. X-ray absorption spectroscopy and actinide electrochemistry: a setup dedicated to radioactive samples applied to neptunium chemistry. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:1-10. [PMID: 34985417 PMCID: PMC8733972 DOI: 10.1107/s1600577521011115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/22/2021] [Indexed: 05/04/2023]
Abstract
A spectroelectrochemical setup has been developed to investigate radioactive elements in small volumes (0.7 to 2 ml) under oxidation-reduction (redox) controlled conditions by X-ray absorption spectroscopy (XAS). The cell design is presented together with in situ XAS measurements performed during neptunium redox reactions. Cycling experiments on the NpO22+/NpO2+ redox couple were applied to qualify the cell electrodynamics using XANES measurements and its ability to probe modifications in the neptunyl hydration shell in a 1 mol l-1 HNO3 solution. The XAS results are in agreement with previous structural studies and the NpO22+/NpO2+ standard potential, determined using Nernst methods, is consistent with measurements based on other techniques. Subsequently, the NpO2+, NpO22+ and Np4+ ion structures in solution were stabilized and measured using EXAFS. The resulting fit parameters are again compared with other results from the literature and with theoretical models in order to evaluate how this spectroelectrochemistry experiment succeeds or fails to stabilize the oxidation states of actinides. The experiment succeeded in: (i) implementing a robust and safe XAS device to investigate unstable radioactive species, (ii) evaluate in a reproducible manner the NpO22+/NpO2+ standard potential under dilute conditions and (iii) clarify mechanistic aspects of the actinyl hydration sphere in solution. In contrast, a detailed comparison of EXAFS fit parameters shows that this method is less appropriate than the majority of the previously reported chemical methods for the stabilization of the Np4+ ion.
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Affiliation(s)
- Richard Husar
- CEA, DES, ISEC, DMRC, Université de Montpellier, Marcoule, France
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Université de Montpellier, Marcoule, France
| | - Michel L. Schlegel
- CEA, DES-Service d’Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Sacly, 911191 Gif-sur-Yvette, France
| | - Daniel Schlegel
- ESTA–École Supérieure des Technologies et des Affaires, 90004 Belfort Cedex, France
| | | | - Pier-Lorenzo Solari
- Synchrotron SOLEIL, L’Orme des Merisiers Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Université de Montpellier, Marcoule, France
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Oher H, Ferru G, Couston L, Berthon L, Guillaumont D, Réal F, Vercouter T, Vallet V. Influence of the First Coordination of Uranyl on Its Luminescence Properties: A Study of Uranyl Binitrate with N, N-Dialkyl Amide DEHiBA and Water. Inorg Chem 2021; 61:890-901. [PMID: 34881886 DOI: 10.1021/acs.inorgchem.1c02618] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Uranyl binitrate complexes have a particular interest in the nuclear industry, especially in the reprocessing of spent nuclear fuel. The modified PUREX extraction process is designed to extract U(VI) in the form of UO2(NO3)2(L)2 as has been confirmed by extended X-ray absorption fine structure (EXAFS), X-ray diffraction (XRD), and time-resolved laser-induced fluorescence spectroscopy (TRLFS) measurements. In this study, the L ligands are two molecules of N,N-di-(ethyl-2-hexyl)isobutyramide (DEHiBA) monoamide used to bind uranyl in its first coordination sphere. DEHiBA ligands can coordinate uranyl in either trans- or cis-position with respect to the nitrate ligands, and these two conformers may coexist in solution. To use luminescence spectroscopy as a speciation technique, it is important to determine whether or not these conformers can be discriminated by their spectroscopic properties. To answer this question, the spectra of trans- and cis-UO2(NO3)2(DEiBA)2 conformers were modeled with ab initio methods and compared to the experimental time-resolved luminescence spectra on UO2(NO3)2(DEHiBA)2 systems. Moreover, the hydrated uranyl binitrate UO2(NO3)2(H2O)2 complexes in the same trans and cis configurations were modeled to quantify the impact of organic DEHiBA on the luminescence properties.
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Affiliation(s)
- Hanna Oher
- Université Paris-Saclay, CEA, Service dÉtudes Analytiques et de Réactivité des Surfaces (SEARS), F-91191 Gif-sur-Yvette Cedex, France.,Université de Lille, CNRS, UMR 8523─PhLAM─Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Geoffroy Ferru
- CEA, DES, ISEC, DMRC, Université de Montpellier, Marcoule, F-30207 Bagnols-sur-Ceze, France
| | - Laurent Couston
- CEA, DES, ISEC, DMRC, Université de Montpellier, Marcoule, F-30207 Bagnols-sur-Ceze, France
| | - Laurence Berthon
- CEA, DES, ISEC, DMRC, Université de Montpellier, Marcoule, F-30207 Bagnols-sur-Ceze, France
| | - Dominique Guillaumont
- CEA, DES, ISEC, DMRC, Université de Montpellier, Marcoule, F-30207 Bagnols-sur-Ceze, France
| | - Florent Réal
- Université de Lille, CNRS, UMR 8523─PhLAM─Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Thomas Vercouter
- Université Paris-Saclay, CEA, Service dÉtudes Analytiques et de Réactivité des Surfaces (SEARS), F-91191 Gif-sur-Yvette Cedex, France
| | - Valérie Vallet
- Université de Lille, CNRS, UMR 8523─PhLAM─Physique des Lasers Atomes et Molécules, F-59000 Lille, France
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Selective separation between UO22+ and Pu4+ by novel tetradentate chelate phenanthroline diamide ligand in 1-octanol. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119521] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Artese A, Dourdain S, Boubals N, Dumas T, Solari PL, Menut D, Berthon L, Guilbaud P, Pellet-Rostaing S. Evidence of Supramolecular Origin of Selectivity in Solvent Extraction of Bifunctional Amidophosphonate Extractants with Different Configurations. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2021.1961433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Alexandre Artese
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | | | | | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | | | - Denis Menut
- Synchrotron SOLEIL, MARS Beamline, Gif Sur Yvette, France
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11
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Electrochemical Behavior of Ce(IV)/Ce(III) Couple in N,N‐Di(2‐ethylhexyl)‐n‐butanamide (DEHBA), N,N‐Di(2‐ethylhexyl)‐iso‐butanamide (DEHiBA), and N,N‐Di(2‐ethylhexyl)‐3,3‐dimethyl Butanamide (DEHDMBA). ELECTROANAL 2021. [DOI: 10.1002/elan.202100157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Failali A, Acher E, Vallet V, Réal F, Guillaumont D. Insights from quantum chemical calculations into inner and outer-sphere complexation of plutonium(IV) by monoamide and carbamide extractants. Phys Chem Chem Phys 2021; 23:2229-2237. [PMID: 33439157 DOI: 10.1039/d0cp05363e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong influence of the structure of amide derivatives on their extraction properties has been demonstrated in several studies in the literature. To investigate and rationalize the influence of the nature and length of the monoamide alkyl chains on Pu(iv) extraction/complexation, a theoretical study was performed using the Density Functional Theory (DFT) method in the scalar relativistic framework. For that, the geometries for the inner/outer-sphere complexes and interaction energies of [Pu(NO3)4] and [Pu(NO3)6]2- with different ligands have been calculated. For both inner and outer-sphere complexes, it is found that the introduction of a bulky alkyl group on the carbonyl side strongly diminishes the complexation energy. This is fully consistent with monamide extraction properties. The influence of the bulkiness of the alkyl group is as or even more important for outer than for inner-sphere interactions. This result was unexpected when considering that there are less flexibility and stronger steric constraints in the inner sphere compared to the outer one. However, this can be attributed to specific electrostatic interactions between the two outer-sphere amide ligands and two nitrate ions of [Pu(NO3)6]2-. By increasing the polarity of the solution, such interactions diminish and the outer-sphere ligands move away from [Pu(NO3)6]2-. Consequently, the solvent effects were found to be very significant for outer-sphere complexation while rather small for inner-sphere complexation. This gives the key possibility to tune the substituent effect by changing the polarity of the solution. As for carbamide ligands, it was found that the weak interactions (dispersion) have remarkable effects on both inner and outer-sphere complexations.
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Affiliation(s)
- Abdelmounaim Failali
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, F-30207 Bagnols-sur-Ceze Cedex, France.
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Felines N, Arrachart G, Giusti F, Beillard A, Marie C, Pellet-Rostaing S. Stereochemically enriched extractants for the extraction of actinides. NEW J CHEM 2021. [DOI: 10.1039/d1nj02077c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stereoisomers of monoamide highlight the importance of the extractant chirality for U/Pu extraction.
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Gogolski JM, Jensen MP. Using N,N-dialkylamides for neptunium purification from other actinides for space applications. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2020.1845209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Jarrod M. Gogolski
- Nuclear Science and Engineering Program, Colorado School of Mines, Golden, Colorado, USA
| | - Mark P. Jensen
- Nuclear Science and Engineering Program, Colorado School of Mines, Golden, Colorado, USA
- Department of Chemistry, Colorado School of Mines, Golden, Colorado, USA
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Moeyaert P, Dumas T, Guillaumont D, Solari PL, Lefebvre C, Thevenet A, Sorel C, Moisy P. Modeling and Speciation Study of Uranium(VI) and Technetium(VII) with TBP. SOLVENT EXTRACTION AND ION EXCHANGE 2020. [DOI: 10.1080/07366299.2020.1834979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Pauline Moeyaert
- CEA, DES, ISEC, DMRC, Univ Montpellier, Bagnols-sur-Cèze, France
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Bagnols-sur-Cèze, France
| | | | | | - Claire Lefebvre
- CEA, DES, ISEC, DMRC, Univ Montpellier, Bagnols-sur-Cèze, France
| | | | - Christian Sorel
- CEA, DES, ISEC, DMRC, Univ Montpellier, Bagnols-sur-Cèze, France
| | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Bagnols-sur-Cèze, France
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Loubert G, Henry N, Volkringer C, Duval S, Tamain C, Arab-Chapelet B, Delahaye T, Loiseau T. Quantitative Precipitation of Uranyl or Plutonyl Nitrate with N-(1-Adamantyl)acetamide in Nitric Acid Aqueous Solution. Inorg Chem 2020; 59:11459-11468. [PMID: 32799463 DOI: 10.1021/acs.inorgchem.0c01258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactivity of the N-(1-adamantyl)acetamide ligand (L = adam) has been evaluated as precipitating agent for the hexavalent uranyl cation ([U] = 20-60 g L-1) in concentrated nitric acid aqueous solution (0.5-5 M). It results in the formation of a crystalline complex (UO2)(adam)2(NO3)2·2(adam) (1), in which the uranyl center is 8-fold coordinated to two chelating nitrate groups and two N-(1-adamantyl)acetamide (= adam) ligands through the oxygen atom of the amide function. Two other noncoordinating adam moieties are also observed in the crystal structure packing and interact through a hydrogen-bond scheme with the uranyl-centered species. A similar molecular assembly has been obtained with the plutonyl(VI) cation, in the complex (PuO2)(adam)2(NO3)2·2(adam) (2). Precipitation studies indicate high (UO2)(adam)2(NO3)2·2(adam) formation yields (up to 99%U for an L/U molecular ratio of 5/1) for HNO3 concentration in the 0.5-5 M range. However, the precipitation kinetics is rather slow and the reaction is completed after several hours (3-4 h). The calcination of the resulting solid under an air atmosphere led to the formation of the U3O8 oxide from 400 °C through a transient phase UO2 fluorite-type (from 200 °C).
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Affiliation(s)
- Gaël Loubert
- Unité de Catalyse et Chimie du Solide (UCCS), UMR CNRS 8181, Université de Lille, Centrale Lille, Université d'Artois, Lille F-59000, France
| | - Natacha Henry
- Unité de Catalyse et Chimie du Solide (UCCS), UMR CNRS 8181, Université de Lille, Centrale Lille, Université d'Artois, Lille F-59000, France
| | - Christophe Volkringer
- Unité de Catalyse et Chimie du Solide (UCCS), UMR CNRS 8181, Université de Lille, Centrale Lille, Université d'Artois, Lille F-59000, France.,Institut Universitaire de France, 1 rue Descartes, Paris Cedex 05 75231, France
| | - Sylvain Duval
- Unité de Catalyse et Chimie du Solide (UCCS), UMR CNRS 8181, Université de Lille, Centrale Lille, Université d'Artois, Lille F-59000, France
| | | | | | | | - Thierry Loiseau
- Unité de Catalyse et Chimie du Solide (UCCS), UMR CNRS 8181, Université de Lille, Centrale Lille, Université d'Artois, Lille F-59000, France
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Abstract
Abstract
Separation of neptunium by solvent extraction has been based on tributylphosphate (TBP) for decades, but TBP is not fully incinerable, which adds to the burden of long-lived radioactive waste. Alternatives to TBP for uranium and plutonium extraction, such as the N,N-diakylamides, previously have been explored in the hopes of transitioning to an extractant that is incinerable. Four N,N-diakylamides, N,N-dihexylhexanamide (DHHA), N,N-dihexyloctanamide (DHOA), N,N-di(2-ethylhexyl)butanamide (DEHBA), and N,N-di(2-ethylhexyl)-iso-butanamide (DEHiBA) were considered in this work for their potential to extract millimolar concentrations of Np(IV), Np(V), and Np(VI) from nitric acid solutions into organic solutions containing 1 M extractant in Exxsol D60. Under these conditions the branching of the alkyl substituents affects the extractability of Np(VI) and Np(IV), causing three of the dialkylamides, DHHA, DHOA and DEHBA, to extract neptunium in the expected order Np(VI) > Np(IV) > > Np(V). In contrast, branched DEHiBA is so poor an extractant for Np(IV) that the extraction order becomes Np(VI) > > Np(V) > Np(IV) between 0.1 and 5.6 M HNO3 due to partial oxidation of the Np(V) in nitric acid.
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Affiliation(s)
- Jarrod M. Gogolski
- Nuclear Science and Engineering Program, Colorado School of Mines , Golden, CO 80401 , USA
| | - Peter R. Zalupski
- Aqueous Separations and Radiochemistry, Idaho National Laboratory , Idaho Falls, ID 83415 , USA
| | - Travis S. Grimes
- Aqueous Separations and Radiochemistry, Idaho National Laboratory , Idaho Falls, ID 83415 , USA
| | - Mark P. Jensen
- Nuclear Science and Engineering Program, Colorado School of Mines , Golden, CO 80401 , USA
- Department of Chemistry, Colorado School of Mines , Golden, CO 80401 , USA
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Hall GB, Holfeltz VE, Campbell EL, Boglaienko D, Lumetta GJ, Levitskaia TG. Evolution of Acid-Dependent Am3+ and Eu3+ Organic Coordination Environment: Effects on the Extraction Efficiency. Inorg Chem 2020; 59:4453-4467. [DOI: 10.1021/acs.inorgchem.9b03612] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gabriel B. Hall
- Nuclear Chemistry and Engineering Group, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
| | - Vanessa E. Holfeltz
- Nuclear Chemistry and Engineering Group, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
| | - Emily L. Campbell
- Nuclear Chemistry and Engineering Group, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
| | - Daria Boglaienko
- Nuclear Chemistry and Engineering Group, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
| | - Gregg J. Lumetta
- Nuclear Chemistry and Engineering Group, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
| | - Tatiana G. Levitskaia
- Nuclear Chemistry and Engineering Group, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
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19
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Berger C, Marie C, Guillaumont D, Tamain C, Dumas T, Dirks T, Boubals N, Acher E, Laszczyk M, Berthon L. Coordination Structures of Uranium(VI) and Plutonium(IV) in Organic Solutions with Amide Derivatives. Inorg Chem 2020; 59:1823-1834. [DOI: 10.1021/acs.inorgchem.9b03024] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Clémence Berger
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Cécile Marie
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | | | - Christelle Tamain
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Thomas Dumas
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Thomas Dirks
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Nathalie Boubals
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Eléonor Acher
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Marjorie Laszczyk
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Laurence Berthon
- CEA, DEN, DMRC, Université de Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
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20
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Pleines M, Hahn M, Duhamet J, Zemb T. A minimal predictive model for better formulations of solvent phases with low viscosity. EPJ NUCLEAR SCIENCES & TECHNOLOGIES 2020. [DOI: 10.1051/epjn/2019055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The viscosity increase of the organic phase when liquid–liquid extraction processes are intensified causes difficulties for hydrometallurgical processes on industrial scale. In this work, we have analyzed this problem for the example of N,N-dialkylamides in the presence of uranyl nitrate experimentally. Furthermore, we present a minimal model at nanoscale that allows rationalizing the experimental phenomena by connecting the molecular, mesoscopic and macroscopic scale and that allows predicting qualitative trends in viscosity. This model opens broad possibilities in optimizing constraints and is a further step towards knowledge-based formulation of extracting microemulsions formed by microstructures with low connectivity, even at high load with heavy metals.
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21
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Ma J, Yang C, Han J, Hu S, Yu H, Long X. Density functional theory investigations on the coordination of Pa( v) with N, N-dialkylamide. NEW J CHEM 2020. [DOI: 10.1039/d0nj00687d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The density functional theory (DFT) method was used to study the coordination of a series of N,N-dialkylamides with Pa(v) to shed light on the inherent principles for screening amide extractants of Pa(v) from aqueous solution.
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Affiliation(s)
- Jun Ma
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Chuting Yang
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Jun Han
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Haizhu Yu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei 230026
- China
| | - Xinggui Long
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang 621900
- China
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22
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Berger C, Marie C, Guillaumont D, Zekri E, Berthon L. Extraction of Uranium(VI) and Plutonium(IV) with Tetra-Alkylcarbamides. SOLVENT EXTRACTION AND ION EXCHANGE 2019. [DOI: 10.1080/07366299.2019.1630095] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Clémence Berger
- CEA, Nuclear Energy Division, Research Department on Mining and Fuel Recycling Processes, SPDS, LCPE, Bagnols-sur-Cèze, France
| | - Cécile Marie
- CEA, Nuclear Energy Division, Research Department on Mining and Fuel Recycling Processes, SPDS, LCPE, Bagnols-sur-Cèze, France
| | - Dominique Guillaumont
- CEA, Nuclear Energy Division, Research Department on Mining and Fuel Recycling Processes, SPDS, LCPE, Bagnols-sur-Cèze, France
| | - Elisabeth Zekri
- CEA, Nuclear Energy Division, Physico-Chemistry Department, SECR, LRMO, Gif-sur-Yvette, France
| | - Laurence Berthon
- CEA, Nuclear Energy Division, Research Department on Mining and Fuel Recycling Processes, SPDS, LCPE, Bagnols-sur-Cèze, France
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23
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Paquet A, Diat O, Berthon L, Guilbaud P. Aggregation in organic phases after solvent extraction of uranyl nitrate: X-ray scattering and molecular dynamic simulations. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Sukhbaatar T, Duvail M, Dumas T, Dourdain S, Arrachart G, Solari PL, Guilbaud P, Pellet-Rostaing S. Probing the existence of uranyl trisulfate structures in the AMEX solvent extraction process. Chem Commun (Camb) 2019; 55:7583-7586. [DOI: 10.1039/c9cc02651g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Knowledge of the complex microstructure in solvent extraction phases is mandatory for a full comprehension of ionic separation. A tri-sulfate structure was evidenced with tertiary amines.
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Affiliation(s)
| | - Magali Duvail
- ICSM, CEA, CNRS, ENSCM, Univ Montpellier
- Marcoule
- France
| | - Thomas Dumas
- CEA
- DEN
- MAR
- DMRC, SPDS, LILA
- F-30207 Bagnols-sur-Cèze Cedex
| | | | | | - Pier Lorenzo Solari
- Synchrotron SOLEIL
- L'Orme des Merisiers
- Saint-Aubin – BP 48
- 91192 Gif-sur-Yvette Cedex
- France
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25
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Duvail M, Dumas T, Paquet A, Coste A, Berthon L, Guilbaud P. UO22+ structure in solvent extraction phases resolved at molecular and supramolecular scales: a combined molecular dynamics, EXAFS and SWAXS approach. Phys Chem Chem Phys 2019; 21:7894-7906. [DOI: 10.1039/c8cp07230b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a polarizable force field for unraveling the UO22+ structure in both aqueous and solvent extraction phases.
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26
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Acher E, Dumas T, Tamain C, Boubals N, Solari PL, Guillaumont D. Inner to outer-sphere coordination of plutonium(iv) with N,N-dialkyl amide: influence of nitric acid. Dalton Trans 2018; 46:3812-3815. [PMID: 28239724 DOI: 10.1039/c7dt00031f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
N,N-Dialkylamides are extensively studied as alternative organic ligands to achieve the extraction and separation of uranium(vi) and plutonium(iv). We report here the coordination structures of the plutonium(iv) ion with N,N-di(2-ethylhexyl)-n-butanamide as a function of nitric acid concentration in the aqueous phase. The coordination structure of Pu(iv) evolves gradually with increasing nitric acid concentration from an inner-sphere with two coordinated amide ligands toward an outer-sphere hexanitrate complex with only nitrate ions in the first coordination sphere and protonated amide ligands in the outer shell.
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Affiliation(s)
- Eléonor Acher
- CEA Marcoule, Nuclear Energy Division, RadioChemistry & Processes Department, DRCP 30207 Bagnols-sur-Cèze, France Bagnols sur Cèze, France.
| | - Thomas Dumas
- CEA Marcoule, Nuclear Energy Division, RadioChemistry & Processes Department, DRCP 30207 Bagnols-sur-Cèze, France Bagnols sur Cèze, France.
| | - Christelle Tamain
- CEA Marcoule, Nuclear Energy Division, RadioChemistry & Processes Department, DRCP 30207 Bagnols-sur-Cèze, France Bagnols sur Cèze, France.
| | - Nathalie Boubals
- CEA Marcoule, Nuclear Energy Division, RadioChemistry & Processes Department, DRCP 30207 Bagnols-sur-Cèze, France Bagnols sur Cèze, France.
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, 91192 Gif sur Yvette, France
| | - Dominique Guillaumont
- CEA Marcoule, Nuclear Energy Division, RadioChemistry & Processes Department, DRCP 30207 Bagnols-sur-Cèze, France Bagnols sur Cèze, France.
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27
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McCann K, Sinkov SI, Lumetta GJ, Shafer JC. Inner versus outer sphere metal-monoamide complexation: ramifications for tetravalent & hexavalent actinide selectivity. NEW J CHEM 2018. [DOI: 10.1039/c7nj04851c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extraction of tetravalent and hexavalent plutonium by straight and branched chained monoamides was studied using UV-vis spectroscopy. These results suggest straight monoamides recover outer-sphere species, while branched chain monoamides recover inner-sphere species.
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Affiliation(s)
- Kevin McCann
- Department of Chemistry
- Colorado School of Mines
- Golden
- USA
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28
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Dalodière E, Virot M, Dumas T, Guillaumont D, Illy MC, Berthon C, Guerin L, Rossberg A, Venault L, Moisy P, Nikitenko SI. Structural and magnetic susceptibility characterization of Pu(v) aqua ion using sonochemistry as a facile synthesis method. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00389g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The facile sonochemical preparation of pure, stable and concentrated Pu(v) aqueous solutions allowed to investigate its solvation environment and magnetic properties.
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29
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Loubert G, Volkringer C, Henry N, Arab-Chapelet B, Delahaye T, Loiseau T. Structural studies of a series of uranyl alkylacetamides and piracetam complexes obtained in nitric acid aqueous solution. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Mei L, Wang CZ, Zhu LZ, Gao ZQ, Chai ZF, Gibson JK, Shi WQ. Exploring New Assembly Modes of Uranyl Terephthalate: Templated Syntheses and Structural Regulation of a Series of Rare 2D → 3D Polycatenated Frameworks. Inorg Chem 2017. [DOI: 10.1021/acs.inorgchem.7b00312] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Zhi-fang Chai
- School
of Radiological and Interdisciplinary Sciences and Collaborative Innovation
Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - John K. Gibson
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
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31
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McCann K, Mincher BJ, Schmitt NC, Braley JC. Hexavalent Actinide Extraction Using N,N-Dialkyl Amides. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01181] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin McCann
- Colorado School
of Mines, Golden, Colorado 80401, United States
| | - Bruce J. Mincher
- Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
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32
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McCann K, Drader JA, Braley JC. Comparing Branched versus Straight-chained Monoamide Extractants for Actinide Recovery. SEPARATION AND PURIFICATION REVIEWS 2017. [DOI: 10.1080/15422119.2017.1321018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Kevin McCann
- Department of Chemistry, Colorado School of Mines, Golden, Colorado, USA
| | - Jessica A. Drader
- Department of Chemistry, Colorado School of Mines, Golden, Colorado, USA
| | - Jenifer C. Braley
- Department of Chemistry, Colorado School of Mines, Golden, Colorado, USA
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33
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Valkonen A, Lombardo GM, Rissanen K, Punzo F, Cametti M. X-Ray crystallographic and computational study on uranyl-salophen complexes bearing nitro groups. Dalton Trans 2017; 46:5240-5249. [PMID: 28374879 DOI: 10.1039/c6dt04773d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the solid state, salophen-UO2 complexes bearing one, two, or three NO2 groups lack the pronounced ligand curvature that represents a structural hallmark for this class of compounds. A detailed structural study based on single-crystal X-ray crystallography and computational methods, comprising molecular dynamics, gas-phase Hartree Fock, and DFT calculations, was carried out to investigate the coordination properties of the uranyl cation.
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Affiliation(s)
- Arto Valkonen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
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34
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Moeyaert P, Dumas T, Guillaumont D, Kvashnina K, Sorel C, Miguirditchian M, Moisy P, Dufrêche JF. Modeling and Speciation Study of Uranium(VI) and Technetium(VII) Coextraction with DEHiBA. Inorg Chem 2016; 55:6511-9. [DOI: 10.1021/acs.inorgchem.6b00595] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pauline Moeyaert
- French Alternative Energies and Atomic Energy Commission, CEA, Nuclear Energy Division, Radio Chemistry & Processes Department, DRCP, BP 17171, F-30207 Bagnols sur Cèze, France
| | - Thomas Dumas
- French Alternative Energies and Atomic Energy Commission, CEA, Nuclear Energy Division, Radio Chemistry & Processes Department, DRCP, BP 17171, F-30207 Bagnols sur Cèze, France
| | - Dominique Guillaumont
- French Alternative Energies and Atomic Energy Commission, CEA, Nuclear Energy Division, Radio Chemistry & Processes Department, DRCP, BP 17171, F-30207 Bagnols sur Cèze, France
| | - Kristina Kvashnina
- European Synchrotron Radiation Facility, 38000 Grenoble, France
- iHelmholtz Zentrum Dresden-Rossendorf, Institute of Resource Ecology, 01314 Dresden, Germany
| | - Christian Sorel
- French Alternative Energies and Atomic Energy Commission, CEA, Nuclear Energy Division, Radio Chemistry & Processes Department, DRCP, BP 17171, F-30207 Bagnols sur Cèze, France
| | - Manuel Miguirditchian
- French Alternative Energies and Atomic Energy Commission, CEA, Nuclear Energy Division, Radio Chemistry & Processes Department, DRCP, BP 17171, F-30207 Bagnols sur Cèze, France
| | - Philippe Moisy
- French Alternative Energies and Atomic Energy Commission, CEA, Nuclear Energy Division, Radio Chemistry & Processes Department, DRCP, BP 17171, F-30207 Bagnols sur Cèze, France
| | - Jean-François Dufrêche
- Institut de Chimie Séparative de Marcoule, Université de Montpellier 2, UMR 5257 CEA/CNRS/UM2/ENSCM BP 17171 30207 Bagnols
sur Cèze Cedex, France
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