51
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D'Angelo P, Migliorati V, Spezia R, De Panfilis S, Persson I, Zitolo A. K-edge XANES investigation of octakis(DMSO)lanthanoid(III) complexes in DMSO solution and solid iodides. Phys Chem Chem Phys 2013; 15:8684-91. [PMID: 23657739 DOI: 10.1039/c3cp50842k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The potential of high energy XANES (X-ray absorption near edge structure) as a tool for the structural analysis of lanthanoid-containing systems has been explored. The K-edge XANES spectra of La(3+), Gd(3+), and Lu(3+) ions both in DMSO solution and solid octakis(DMSO)lanthanoid(III) iodides have been analysed. Although the K-edges of lanthanoids cover the energy range of 38 (La) to 65 (Lu) keV, the large widths of the core hole states do not appreciably reduce the potential structural information of the XANES data. We show that, for lanthanoid compounds, accurate structural parameters are obtained from the analysis of K-edge XANES signals if a deconvolution procedure is carried out. We found that in solid octakis(DMSO)lanthanoid(III) iodides the Ln(3+) ions are coordinated by eight DMSO ligands arranged in a quite symmetric fashion. In DMSO solution the Ln(3+) ions retain a regular eight-coordination structure and the coordination number does not change along the series. In contrast to when in water the second coordination shell has been found to provide a negligible contribution to the XANES spectra of Ln(3+) ions in DMSO solution.
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Affiliation(s)
- Paola D'Angelo
- Dipartimento di Chimica, Università di Roma La Sapienza, P.le A. Moro 5, 00185 Roma, Italy.
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52
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Smirnov PR, Grechin OV, Trostin VN. Concentration dependence of the structure of aqueous solutions of samarium trichloride according to X-ray diffraction. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2013. [DOI: 10.1134/s0036024413050221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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53
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Affiliation(s)
- Marco Masia
- Dipartimento di Chimica e Farmacia,
Università degli Studi di Sassari, Istituto Officina dei Materiali del CNR, UOS SLACS, Via Vienna 2, 07100
Sassari, Italy
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54
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Migliorati V, D'Angelo P. A quantum mechanics, molecular dynamics and EXAFS investigation into the Hg2+ ion solvation properties in methanol solution. RSC Adv 2013. [DOI: 10.1039/c3ra43412e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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55
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Development and applications of the ABEEM fluctuating charge molecular force field in the ion-containing systems. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4787-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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56
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Martelli F, Vuilleumier R, Simonin JP, Spezia R. Varying the charge of small cations in liquid water: Structural, transport, and thermodynamical properties. J Chem Phys 2012; 137:164501. [DOI: 10.1063/1.4758452] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Fausto Martelli
- Université d'Evry Val d'Essonne, Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, CNRS, UMR 8587, Boulevard F. Mitterrand, 91025 Evry Cedex, France
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57
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D'Angelo P, Spezia R. Hydration of Lanthanoids(III) and Actinoids(III): An Experimental/Theoretical Saga. Chemistry 2012; 18:11162-78. [DOI: 10.1002/chem.201200572] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Indexed: 11/06/2022]
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58
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Lanthanoids(III) and actinoids(III) in water: Diffusion coefficients and hydration enthalpies from polarizable molecular dynamics simulations. PURE APPL CHEM 2012. [DOI: 10.1351/pac-con-12-02-08] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
By using polarizable molecular dynamics (MD) simulations of lanthanoid(III) and actinoid(III) ions in water, we obtained ionic diffusion coefficients and hydration enthalpies for both series. These values are in good agreement with experiments. Simulations thus allow us to relate them to microscopic structure. In particular, across the series the diffusion coefficients decrease, reflecting the increase of ion–water interaction. Hydration enthalpies also show that interactions increase from light to heavy ions in agreement with experiment. The apparent contradictory result of the decrease of the diffusion coefficient with decreasing ionic radius is tentatively explained in terms of dielectric friction predominance on Stokes’ diffusive regime.
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59
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Spezia R, Beuchat C, Vuilleumier R, D’Angelo P, Gagliardi L. Unravelling the Hydration Structure of ThX4 (X = Br, Cl) Water Solutions by Molecular Dynamics Simulations and X-ray Absorption Spectroscopy. J Phys Chem B 2012; 116:6465-75. [DOI: 10.1021/jp210350b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Riccardo Spezia
- CNRS, Laboratoire Analyse et
Modélisation pour la Biologie et l’Environnement, UMR 8587 Université d’Evry Val d’Essonne, 91025 Evry Cedex, France
| | - Cesar Beuchat
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211
Geneva, Switzerland
| | - Rodolphe Vuilleumier
- Ecole Normale Supérieure, Département
de Chimie, 24, rue Lhomond, 75005 Paris, France,
and UPMC Univ Paris 06, 4, Place Jussieu,
75005 Paris, UMR 8640 CNRS-ENS-UPMC, France
| | - Paola D’Angelo
- Dipartimento di Chimica, Università di Roma “La Sapienza”, P.le A. Moro 5,
00185 Roma, Italy
| | - Laura Gagliardi
- Department
of Chemistry and
Supercomputing Institute, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United
States
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60
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Smirnov PR, Trostin VN. Structural parameters of the nearest surrounding of lanthanide ions in aqueous solutions of their salts. RUSS J GEN CHEM+ 2012. [DOI: 10.1134/s1070363212030036] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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61
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Marjolin A, Gourlaouen C, Clavaguéra C, Ren PY, Wu JC, Gresh N, Dognon JP, Piquemal JP. Toward accurate solvation dynamics of lanthanides and actinides in water using polarizable force fields: from gas-phase energetics to hydration free energies. Theor Chem Acc 2012. [DOI: 10.1007/s00214-012-1198-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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62
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63
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Jeanvoine Y, Miró P, Martelli F, Cramer CJ, Spezia R. Electronic structure and bonding of lanthanoid(iii) carbonates. Phys Chem Chem Phys 2012; 14:14822-31. [DOI: 10.1039/c2cp41996c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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64
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Lipparini F, Barone V. Polarizable Force Fields and Polarizable Continuum Model: A Fluctuating Charges/PCM Approach. 1. Theory and Implementation. J Chem Theory Comput 2011; 7:3711-24. [DOI: 10.1021/ct200376z] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
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65
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Duvail M, Martelli F, Vitorge P, Spezia R. Polarizable interaction potential for molecular dynamics simulations of actinoids(III) in liquid water. J Chem Phys 2011; 135:044503. [DOI: 10.1063/1.3613699] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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66
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Fujiwara T, Mori H, Mochizuki Y, Osanai Y, Miyoshi E. 4f-in-core model core potentials for trivalent lanthanides. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.05.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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67
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Díaz-Moreno S, Ramos S, Bowron DT. Solvation structure and ion complexation of La3+ in a 1 molal aqueous solution of lanthanum chloride. J Phys Chem A 2011; 115:6575-81. [PMID: 21574644 DOI: 10.1021/jp202961t] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
H/D isotopic substitution neutron scattering and X-ray scattering have been used to investigate the short and intermediate range solution structure in a 1 m aqueous solution of lanthanum chloride. To improve the reliability of the local structural information on the cation environment, information has been incorporated from Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy data into the applied analytical framework. The markedly different structural sensitivities of the experimental probes allow the construction of a detailed three-dimensional atomistic model using the Empirical Potential Structure Refinement (EPSR) technique. The results show that at the investigated concentration La(3+) is hydrated by eight water molecules and one chloride ion, forming an inner-sphere ion complex in which the water molecules maintain angular configurations consistent with a tricapped trigonal prism configuration. This local geometry considerably disrupts the bulk solvent structure.
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Affiliation(s)
- Sofia Díaz-Moreno
- Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
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68
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Atta-Fynn R, Bylaska EJ, Schenter GK, de Jong WA. Hydration Shell Structure and Dynamics of Curium(III) in Aqueous Solution: First Principles and Empirical Studies. J Phys Chem A 2011; 115:4665-77. [DOI: 10.1021/jp201043f] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Raymond Atta-Fynn
- W. R. Wiley Environmental Molecular Sciences Laboratory and ‡Chemical and Material Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Eric J. Bylaska
- W. R. Wiley Environmental Molecular Sciences Laboratory and ‡Chemical and Material Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Gregory K. Schenter
- W. R. Wiley Environmental Molecular Sciences Laboratory and ‡Chemical and Material Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Wibe A. de Jong
- W. R. Wiley Environmental Molecular Sciences Laboratory and ‡Chemical and Material Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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69
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D’Angelo P, Zitolo A, Migliorati V, Chillemi G, Duvail M, Vitorge P, Abadie S, Spezia R. Revised Ionic Radii of Lanthanoid(III) Ions in Aqueous Solution. Inorg Chem 2011; 50:4572-9. [DOI: 10.1021/ic200260r] [Citation(s) in RCA: 175] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paola D’Angelo
- Department of Chemistry, University of Rome “La Sapienza”, P. le A. Moro 5, 00185 Roma, Italy
| | - Andrea Zitolo
- Department of Chemistry, University of Rome “La Sapienza”, P. le A. Moro 5, 00185 Roma, Italy
| | - Valentina Migliorati
- Department of Chemistry, University of Rome “La Sapienza”, P. le A. Moro 5, 00185 Roma, Italy
| | - Giovanni Chillemi
- CASPUR, Inter-University Consortium for Supercomputing in Research, via dei Tizii 6b, 00185 Roma, Italy
| | - Magali Duvail
- Laboratoire Analyse et Modelisation pour la Biologie et l′Environnement, UMR 8587 CNRS-CEA-UEVE, Université d’Evry Val d’Essonne, Bd F. Mitterrand, 91025 Evry Cedex, France
| | - Pierre Vitorge
- Laboratoire Analyse et Modelisation pour la Biologie et l′Environnement, UMR 8587 CNRS-CEA-UEVE, Université d’Evry Val d’Essonne, Bd F. Mitterrand, 91025 Evry Cedex, France
- Laboratoire de Speciation des Radionucleides et des Molecules, CEA, DEN, F-91191 Gif-sur-Yvette, France
| | - Sacha Abadie
- Department of Chemistry, University of Rome “La Sapienza”, P. le A. Moro 5, 00185 Roma, Italy
- Laboratoire Analyse et Modelisation pour la Biologie et l′Environnement, UMR 8587 CNRS-CEA-UEVE, Université d’Evry Val d’Essonne, Bd F. Mitterrand, 91025 Evry Cedex, France
| | - Riccardo Spezia
- Laboratoire Analyse et Modelisation pour la Biologie et l′Environnement, UMR 8587 CNRS-CEA-UEVE, Université d’Evry Val d’Essonne, Bd F. Mitterrand, 91025 Evry Cedex, France
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70
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Sala J, Guàrdia E, Masia M. The polarizable point dipoles method with electrostatic damping: implementation on a model system. J Chem Phys 2011; 133:234101. [PMID: 21186852 DOI: 10.1063/1.3511713] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Recently, the use of polarizable force fields in Molecular Dynamics simulations has been gaining importance, since they allow a better description of heterogeneous systems compared to simple point charges force fields. Among the various techniques developed in the last years the one based on polarizable point dipoles represents one of the most used. In this paper, we review the basic technical issues of the method, illustrating the way to implement intramolecular and intermolecular damping of the electrostatic interactions, either with and without the Ewald summation method. We also show how to reduce the computational overhead for evaluating the dipoles, introducing to the state-of-the-art methods: the extended Lagrangian method and the always stable predictor corrector method. Finally we discuss the importance of screening the electrostatic interactions at short range, defending this technique against simpler approximations usually made. We compare results of density functional theory and classical force field-based Molecular Dynamics simulations of chloride in water.
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Affiliation(s)
- Jonàs Sala
- Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Campus Nord B4-B5, Barcelona 08034, Spain.
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71
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Molina JJ, Duvail M, Dufrêche JF, Guilbaud P. Atomistic Description of Binary Lanthanoid Salt Solutions: A Coarse-Graining Approach. J Phys Chem B 2011; 115:4329-40. [DOI: 10.1021/jp1110168] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John Jairo Molina
- Physicochimie des Electrolytes, Colloides et Sciences Analytiques, UMR 7195, UPMC Université Paris 06, F-75005 Paris, France
- Institut de Chimie Séparative de Marcoule, UMR 5257, CEA-CNRS, Université Montpellier 2, Site de Marcoule Bâtiment 426, BP 17171, 30207 Bagnols-sur-Cèze Cedex, France
| | - Magali Duvail
- RadioChemistry and Processes Department, Nuclear Energy Division, Commissariat à l’Energie Atomique, F-30207 Bagnols sur Cèze, France
| | - Jean-François Dufrêche
- Institut de Chimie Séparative de Marcoule, UMR 5257, CEA-CNRS, Université Montpellier 2, Site de Marcoule Bâtiment 426, BP 17171, 30207 Bagnols-sur-Cèze Cedex, France
| | - Philippe Guilbaud
- RadioChemistry and Processes Department, Nuclear Energy Division, Commissariat à l’Energie Atomique, F-30207 Bagnols sur Cèze, France
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72
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Beuchat C, Hagberg D, Spezia R, Gagliardi L. Hydration of lanthanide chloride salts: a quantum chemical and classical molecular dynamics simulation study. J Phys Chem B 2010; 114:15590-7. [PMID: 21053931 DOI: 10.1021/jp105590h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We present the results of a quantum chemical and classical molecular dynamics simulation study of some solutions containing chloride salts of La(3+), Gd(3+), and Er(3+) at various concentrations (from 0.05 to 5 M), with the purpose of understanding their structure and dynamics and analyzing how the coordination varies along the lanthanide series. In the La-Cl case, nine water molecules surround the central La(3+) cation in the first solvation shell, and chloride is present only in the second shell for all solutions but the most concentrated one (5 M). In the Gd(3+) case, the coordination number is ∼8.6 for the two lowest concentrations (0.05 and 0.1 M), and then it decreases rapidly. In the Er(3+) case, the coordination number is 7.4 for the two lowest concentrations (0.05 and 0.1 M), and then it decreases. The counterion Cl(-) is not present in the first solvation shell in the La(3+) case for most of the solutions, but it becomes progressively closer to the central cation in the Gd(3+) and Er(3+) cases, even at low concentrations.
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Affiliation(s)
- Cesar Beuchat
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland
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73
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Bonnet CS, Fries PH. Paramagnetic Relaxation Enhancements in Acetate and Its Fluorine Derivatives Interacting with Gd3+: Complex Formation, Structure, and Transmetallation. Chemphyschem 2010; 11:3474-84. [DOI: 10.1002/cphc.201000448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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74
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75
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Terrier C, Vitorge P, Gaigeot MP, Spezia R, Vuilleumier R. Density functional theory based molecular dynamics study of hydration and electronic properties of aqueous La3+. J Chem Phys 2010; 133:044509. [DOI: 10.1063/1.3460813] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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76
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Fujiwara T, Mori H, Mochizuki Y, Tatewaki H, Miyoshi E. Theoretical study of hydration models of trivalent rare-earth ions using model core potentials. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.02.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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77
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Molina JJ, Duvail M, Guilbaud P, Dufrêche JF. Coarse-grained lanthanoid chloride aqueous solutions. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2010.01.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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78
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Galbis E, Hernández-Cobos J, den Auwer C, Le Naour C, Guillaumont D, Simoni E, Pappalardo R, Sánchez Marcos E. Solving the Hydration Structure of the Heaviest Actinide Aqua Ion Known: The Californium(III) Case. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906129] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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79
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Galbis E, Hernández-Cobos J, den Auwer C, Le Naour C, Guillaumont D, Simoni E, Pappalardo R, Sánchez Marcos E. Solving the Hydration Structure of the Heaviest Actinide Aqua Ion Known: The Californium(III) Case. Angew Chem Int Ed Engl 2010; 49:3811-5. [DOI: 10.1002/anie.200906129] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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80
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Duvail M, Ruas A, Venault L, Moisy P, Guilbaud P. Molecular Dynamics Studies of Concentrated Binary Aqueous Solutions of Lanthanide Salts: Structures and Exchange Dynamics. Inorg Chem 2009; 49:519-30. [DOI: 10.1021/ic9017085] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Magali Duvail
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, F-30207 Bagnols sur Cèze, France
| | - Alexandre Ruas
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, F-30207 Bagnols sur Cèze, France
| | - Laurent Venault
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, F-30207 Bagnols sur Cèze, France
| | - Philippe Moisy
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, F-30207 Bagnols sur Cèze, France
| | - Philippe Guilbaud
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, F-30207 Bagnols sur Cèze, France
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81
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Spezia R, Duvail M, Vitorge P, D'Angelo P. Molecular dynamics to rationalize EXAFS experiments: A dynamical model explaining hydration behaviour across the lanthanoid(III) series. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/190/1/012056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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82
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What first principles molecular dynamics can tell us about EXAFS spectroscopy of radioactive heavy metal cations in water. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2009.1616] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
In this paper we show how molecular dynamics simulation can improve comprehension of structure and dynamics of water solvent around heavy cations. In particular, metal-water radial distribution function obtained from molecular dynamics can be used into EXAFS equation to improve the experimental signal fitting. Here we show results on structure and dynamics of Co2+, that is a radiocontaminant cation in its isotopic form 60Co, and lanthanoids(III) that are the chemical analogues of actinides(III) in aqueous solution.
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