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Alhimidi SRH, Al-Ibadi MAM, Jabbar ML. QTAIM analysis of the bonding in anionic group 6 carbonyl selenide clusters: [Se 2M 3(CO) 10] 2- (M=Cr, Mo, W). J Mol Model 2024; 30:230. [PMID: 38922351 DOI: 10.1007/s00894-024-06031-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024]
Abstract
CONTEXT This research aims to offer a deeper understanding of the bonding interactions between M-Se and M-CO and how these interactions change across the group 6 transition metal series: [Se2M3(CO)10]2- (M = Cr, Mo, W). It also seeks to explore the impact of carbonyl groups on M-M interactions within the clusters. Seven criteria, which are based on QTAIM properties, have been considered and compared with the corresponding criteria in other transition metal clusters. The results confirm that no such bond critical points or bond baths occur between transition metals, which instead have 5c-7e bonding interactions delocalized over their five-membered M3(μ-Se)2 ring, as evidenced by the non-negligible nonbonding delocalization indices. The topological properties of three bond clusters, Cr-Se, Mo-Se, and W-Se, resemble those of "intermediate closed shell characters," which combine covalent and electrostatic properties. Source function calculations indicated that the bonded Se atom contributed the most to each Cr-Se and Mo-Se bcp. The OCO atoms and nonbonded Se atoms also contributed to some extent. However, metal atoms act as sinks rather than as sources of electron density. In contrast, the majority of the metal atoms, both bonded and nonbonded, contribute to Cr-W bcps. Analysis of the delocalization indices δ(M…O) in the three clusters indicates that CO significantly contributes to Cr π-back donation in cluster 1. In contrast, no π-back donation occurs from CO to Mo or W in clusters 2 or 3, respectively. METHODS The B3P86 hybrid functional was used for computations in the Gaussian 09 software. The LanL2DZ basis set was employed for Cr, Mo, and W, while the 6-31G (d, p) basis set was used for C, O, and Se atoms. We performed QTAIM analysis using the AIM2000 and Multiwfn packages, incorporating B3P86/WTBS for Cr, Mo, and W atoms. The 6-311++G(3df,3pd) basis set was used for C, O, and Se atoms. Additionally, we utilized the ELF and SF.
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Affiliation(s)
| | - Muhsen Abood Muhsen Al-Ibadi
- Department of Chemistry, College of Science, University of Kufa, Najaf, Iraq.
- Department of Medical Techniques Analysis, College of Medical Techniques, The Islamic University, Najaf, Iraq.
| | - Mohammed L Jabbar
- Department of Physics, College of Science, Thi-Qar University, Nasiriyah, Iraq
- Medical physics Department, Hilla University College, Babylon, Iraq
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2
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Lin X, Lu X, Tang S, Wu W, Mo Y. Multiconfigurational actinide nitrides assisted by double Möbius aromaticity. Chem Sci 2024; 15:8216-8226. [PMID: 38817572 PMCID: PMC11134321 DOI: 10.1039/d4sc01549e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 04/25/2024] [Indexed: 06/01/2024] Open
Abstract
Understanding the bonding nature between actinides and main-group elements remains a key challenge in actinide chemistry due to the involvement of f orbitals. Herein, we propose a unique "aromaticity-assisted multiconfiguration" (AAM) model to elucidate the bonding nature in actinide nitrides (An2N2, An = Ac, Th, Pa, U). Each planar four-membered An2N2 with equivalent An-N bonds possesses four delocalized π electrons and four delocalized σ electrons, forming a new family of double Möbius aromaticity that contributes to the molecular stability. The unprecedented aromaticity further supports actinide nitrides to exhibit multiconfigurational characters, where the unpaired electrons (2, 4 or 6 in naked Th2N2, Pa2N2 or U2N2, respectively) either are spin-free and localized on metal centres or form metal-ligand bonds. High-level multiconfigurational computations confirm an open-shell singlet ground state for actinide nitrides, with small energy gaps to high spin states. This is consistent with the antiferromagnetic nature observed experimentally in uranium nitrides. The novel AAM bonding model can be authenticated in both experimentally identified compounds containing a U2N2 motif and other theoretically modelled An2N2 clusters and is thus expected to be a general chemical bonding pattern between actinides and main-group elements.
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Affiliation(s)
- Xuhui Lin
- School of Physics, Central South University Changsha Hunan 410083 China
| | - Xiaoli Lu
- School of Chemistry, Southwest Jiaotong University Chengdu Sichuan 610031 China
| | - Shenghui Tang
- School of Chemistry, Southwest Jiaotong University Chengdu Sichuan 610031 China
| | - Wei Wu
- The State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
| | - Yirong Mo
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro Greensboro NC 27401 USA
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3
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Zhang X, Ye L, Chen W, Zhang X, Chen W, Chen M, Huang P. Theoretical Study of Am(III) and Eu(III) Separation by a Bipyridyl Phosphate Ligand. ACS OMEGA 2024; 9:12060-12068. [PMID: 38496969 PMCID: PMC10938453 DOI: 10.1021/acsomega.3c09940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/07/2024] [Accepted: 02/14/2024] [Indexed: 03/19/2024]
Abstract
Actinide An(III) and lanthanide Ln(III) are known to exhibit similar chemical properties; thus, it is difficult to distinguish them in the separation of highly radioactive waste liquids. One potential method to efficiently separate actinides and lanthanides involves the design and development of phosphorus-oxygen-bonded ligands with solvent extraction separation. Here, a bipyridine phosphate ligand with two isopropyl and phosphate groups is introduced to selectively extract actinides. The electronic structure, bonding properties, thermodynamic behavior, and quantum theory of atoms in molecules (QTAIM) of Am(III) and Eu(III) complexes with the bipyridine phosphate ligands were analyzed by using density functional theory (DFT) calculations. The analysis demonstrates that the Am-N bond exhibits stronger covalent characteristics than the Eu-N bond, indicating that the bipyridine phosphate ligand had better selectivity for Am(III) than for Eu(III) in terms of binding affinity. The thermodynamic analysis established the complex [ML(NO3)2(H2O)2]+ as the most stable species during the complexation process. The results indicate great potential for utilizing the bipyridine phosphate ligand for the effective separation of An(III)/Ln(III) in spent fuel reprocessing experiments.
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Affiliation(s)
- Xinyi Zhang
- Key
Laboratory of Intelligent Manufacturing Quality Big Data Tracing and
Analysis of Zhejiang Province, College of Science, China Jiliang University, Hangzhou 310018, China
| | - Lulu Ye
- Key
Laboratory of Intelligent Manufacturing Quality Big Data Tracing and
Analysis of Zhejiang Province, College of Science, China Jiliang University, Hangzhou 310018, China
| | - Weihao Chen
- Key
Laboratory of Intelligent Manufacturing Quality Big Data Tracing and
Analysis of Zhejiang Province, College of Science, China Jiliang University, Hangzhou 310018, China
| | - Xiaofei Zhang
- Key
Laboratory of Intelligent Manufacturing Quality Big Data Tracing and
Analysis of Zhejiang Province, College of Science, China Jiliang University, Hangzhou 310018, China
| | - Weiwei Chen
- Key
Laboratory of Intelligent Manufacturing Quality Big Data Tracing and
Analysis of Zhejiang Province, College of Science, China Jiliang University, Hangzhou 310018, China
| | - Miaogen Chen
- Key
Laboratory of Intelligent Manufacturing Quality Big Data Tracing and
Analysis of Zhejiang Province, College of Science, China Jiliang University, Hangzhou 310018, China
| | - Pinwen Huang
- Zhejiang
University of Water Resources and Electric Power, Hangzhou 310018, China
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4
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Yi X, Chen W, Xiao Y, Liu F, Yu X, Zheng A. Spectroscopically Visualizing the Evolution of Hydrogen-Bonding Interactions. J Am Chem Soc 2023; 145:27471-27479. [PMID: 37993784 DOI: 10.1021/jacs.3c08723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
Understanding chemical bond variations is the soul of chemistry as it is essential for any chemical process. The evolution of hydrogen bonds is one of the most fundamental and emblematic events during proton transfer; however, its experimental visualization remains a formidable challenge because of the transient timescales. Herein, by subtly regulating the proton-donating ability of distinct proton donors (zeolites or tungstophosphoric acid), a series of different hydrogen-bonding configurations were precisely manipulated. Then, an advanced two-dimensional (2D) heteronuclear correlation nuclear magnetic resonance (NMR) spectroscopic technique was utilized to simultaneously monitor the electronic properties of proton donors and acceptors (2-13C-acetone or trimethylphosphine oxide) through chemical shifts. Parabolic 1H-13C NMR relationships combined with single-well and double-well potential energy surfaces derived from theoretical simulations quantitatively identified the hydrogen bond types and allowed the evolution of hydrogen bonds to be visualized in diverse acid-base interaction complexes during proton transfer. Our findings provide a new perspective to reveal the nature and evolution of hydrogen bonds and confirm the superiority of 2D NMR techniques in identifying the subtle distinctions of various hydrogen-bonding configurations.
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Affiliation(s)
- Xianfeng Yi
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Yao Xiao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Fengqing Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xin Yu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- Interdisciplinary Institute of NMR and Molecular Sciences, School of Chemistry and Chemical Engineering, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
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5
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Marks JH, Batchelor AG, Blais JRC, Duncan MA. Cation Complexes of Uranium and Thorium with Cyclooctatetraene: Photochemistry and Decomposition Products. J Phys Chem A 2022; 126:4230-4240. [PMID: 35749286 DOI: 10.1021/acs.jpca.2c03035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ion-molecule complexes of uranium or thorium singly-charged positive ions bound to cyclooctatetraene (COT), i.e., M+(COT)1,2, are produced by laser ablation and studied with UV laser photodissociation. The ions are selected by mass and excited at 355 or 532 nm, and the ionized dissociation products are detected using a reflectron time-of-flight mass spectrometer. The abundant fragments M+(C6H6), M+(C4H4), and M+(C2H2) occur for complexes of both metals, whereas the M+(C4H2), M+(C3H3), and M+(C5H5) fragments are prominent for uranium complexes but not for thorium. Additional experiments investigate the dissociation of M+(benzene)1,2 ions which may be intermediates in the fragmentation of the COT ions. The experiments are complemented by computational quantum chemistry to investigate the structures and energetics of fragment ions. Various cation-π and metallacycle structures are indicated for different fragment ions. The metal ion-ligand bond energies for corresponding complex ions are systematically greater for the thorium species. The computed thermochemistry makes it possible to explain the mechanistic details of the photochemical fragmentation processes and to reveal new actinide organometallic structures.
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Affiliation(s)
- Joshua H Marks
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Anna G Batchelor
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - John R C Blais
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Michael A Duncan
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
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6
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Yu X, Sergentu DC, Feng R, Autschbach J. Covalency of Trivalent Actinide Ions with Different Donor Ligands: Do Density Functional and Multiconfigurational Wavefunction Calculations Corroborate the Observed "Breaks"? Inorg Chem 2021; 60:17744-17757. [PMID: 34747167 DOI: 10.1021/acs.inorgchem.1c02374] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A comprehensive ab initio study of periodic actinide-ligand bonding trends for trivalent actinides is performed. Relativistic density functional theory (DFT) and complete active-space (CAS) self-consistent field wavefunction calculations are used to dissect the chemical bonding in the [AnCl6]3-, [An(CN)6]3-, [An(NCS)6]3-, [An(S2PMe2)3], [An(DPA)3]3-, and [An(HOPO)]- series of actinide (An = U-Es) complexes. Except for some differences for the early actinide complexes with DPA, bond orders and excess 5f-shell populations from donation bonding show qualitatively similar trends in 5f n active-space CAS vs DFT calculations. The influence of spin-orbit coupling on donation bonding is small for the tested systems. Along the actinide series, chemically soft vs chemically harder ligands exhibit clear differences in bonding trends. There are pronounced changes in the 5f populations when moving from Pu to Am or Cm, which correlate with previously noted "breaks" in chemical trends. Bonding involving 5f becomes very weak beyond Cm/Bk. We propose that Cm(III) is a borderline case among the trivalent actinides that can be meaningfully considered to be involved in ground-state 5f covalent bonding.
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Affiliation(s)
- Xiaojuan Yu
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Dumitru-Claudiu Sergentu
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Rulin Feng
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
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7
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Revisiting UF6, NpF6 and PuF6 for bonding and molecular surface analysis within density functional theory: Comparative study at the different theory levels with the same basis set. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115452] [Citation(s) in RCA: 0] [Impact Index Per Article: 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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Yi X, Peng YK, Chen W, Liu Z, Zheng A. Surface Fingerprinting of Faceted Metal Oxides and Porous Zeolite Catalysts by Probe-Assisted Solid-State NMR Approaches. Acc Chem Res 2021; 54:2421-2433. [PMID: 33856775 DOI: 10.1021/acs.accounts.1c00069] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Acid catalysis in heterogeneous systems such as metal oxides and porous zeolites has been widely involved in various catalytic processes for chemical and petrochemical industries. In acid-catalyzed reactions, the performance (e.g., activity and selectivity) is closely associated with the acidic features of the catalysts, viz., type (Lewis vs Brønsted acidity), distribution (external vs internal surface), strength (strong vs weak), concentration (amount), and spatial interactions of acidic sites. The characterization of local structure and acidic properties of these active sites has important implications for understanding the reaction mechanism and the practical catalytic applications of acidic catalysts. Among diverse acidity characterization approaches, the solid-state nuclear magnetic resonance (SSNMR) technique with suitable probe molecules has been recognized as a reliable and versatile tool. Such a probe-assisted SSNMR approach could provide qualitative (type, distribution, and spatial interactions) and quantitative (strength and concentration) information on each acidic site. This Account aims to integrate our recent important findings in determining the structures and acidic characteristics of some typical metal oxide and zeolite catalysts by using the probe-assisted SSNMR technique, as well as clarifying the continuously evolving process of each discrete acidic site under hydrothermal or chemical treatments even at the molecular level with multiscale theoretical simulations.More specifically, we will describe herein the development and applications of the probe-assisted SSNMR methods, such as trimethylphosphine (TMP) and acetonitrile-d3 (CD3CN) in conjunction with advanced two-dimensional (2D) homo- and heteronuclear correlation spectroscopy, for characterizing the structures and properties of acidic sites in varied solid catalysts. Moreover, relevant information regarding the surface fingerprinting of various facets on crystalline metal oxide nanoparticles and active centers inside porous zeolites, the mapping of relevant spatial interactions, and the verification of structure-activity correlation were investigated as well. Relevant discussions are mainly based on the recent NMR experiments of our collaborating research groups, including (i) determining the acidic characterization with probe-assisted SSNMR approaches, (ii) mapping various active centers (or crystalline facets), and (iii) revealing their influence on catalytic performance of solid acid catalyst systems. It is anticipated that this information may provide more in-depth insights toward our fundamental understanding of solid acid catalysis.
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Affiliation(s)
- Xianfeng Yi
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yung-Kang Peng
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, P. R. China
| | - Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhiqiang Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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9
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Cossard A, Desmarais JK, Casassa S, Gatti C, Erba A. Charge Density Analysis of Actinide Compounds from the Quantum Theory of Atoms in Molecules and Crystals. J Phys Chem Lett 2021; 12:1862-1868. [PMID: 33577336 PMCID: PMC8028320 DOI: 10.1021/acs.jpclett.1c00100] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/10/2021] [Indexed: 05/17/2023]
Abstract
The nature of chemical bonding in actinide compounds (molecular complexes and materials) remains elusive in many respects. A thorough analysis of their electron charge distribution can prove decisive in elucidating bonding trends and oxidation states along the series. However, the accurate determination and robust analysis of the charge density of actinide compounds pose several challenges from both experimental and theoretical perspectives. Significant advances have recently been made on the experimental reconstruction and topological analysis of the charge density of actinide materials [Gianopoulos et al. IUCrJ, 2019, 6, 895]. Here, we discuss complementary advances on the theoretical side, which allow for the accurate determination of the charge density of actinide materials from quantum-mechanical simulations in the bulk. In particular, the extension of the Topond software implementing Bader's quantum theory of atoms in molecules and crystals (QTAIMAC) to f- and g-type basis functions is introduced, which allows for an effective study of lanthanides and actinides in the bulk and in vacuo, on the same grounds. Chemical bonding of the tetraphenyl phosphate uranium hexafluoride cocrystal [PPh4+][UF6-] is investigated, whose experimental charge density is available for comparison. Crystal packing effects on the charge density and chemical bonding are quantified and discussed. The methodology presented here allows reproducing all subtle features of the topology of the Laplacian of the experimental charge density. Such a remarkable qualitative and quantitative agreement represents a strong mutual validation of both approaches-experimental and computational-for charge density analysis of actinide compounds.
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Affiliation(s)
- Alessandro Cossard
- Dipartimento
di Chimica, Università di Torino, via Giuria 5, 10125 Torino, Italy
| | - Jacques K. Desmarais
- Dipartimento
di Chimica, Università di Torino, via Giuria 5, 10125 Torino, Italy
| | - Silvia Casassa
- Dipartimento
di Chimica, Università di Torino, via Giuria 5, 10125 Torino, Italy
| | - Carlo Gatti
- CNR-SCITEC,
Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, via C. Golgi 19, 20133 Milano, Italy
| | - Alessandro Erba
- Dipartimento
di Chimica, Università di Torino, via Giuria 5, 10125 Torino, Italy
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10
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Complexation of trivalent lanthanides and actinides with diethylenetriaminepentaacetic acid: Theoretical unraveling of bond covalency. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112174] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Coordination behavior of uranyl with PDAM derivatives in solution: Combined study with ESI-MS and DFT. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Ballance DG, Bryantsev VS, Ivanov AS, Dai S, Hancock RD. Complexation of lanthanides and other metal ions by the polypyridyl ligand quaterpyridine: Relation between metal ion size, chelate ring size, and complex stability. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.12.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Qiu X, Hu H, Yang J, Cheng Z, Ji G. A theoretical investigation on the selective extraction of Cu(II) from Ni(II) by 2-aminomethylpyridine derivatives: A DFT study. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Chi XW, Wu QY, Hao Q, Lan JH, Wang CZ, Zhang Q, Chai ZF, Shi WQ. Theoretical Study on Unsupported Uranium–Metal Bonding in Uranium–Group 8 Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00391] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xiao-Wang Chi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- College of Mining, Guizhou University, Guiyang, 550025, China
| | - Qun-Yan Wu
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiang Hao
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029, China
| | - Jian-Hui Lan
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Cong-Zhi Wang
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Qin Zhang
- College of Mining, Guizhou University, Guiyang, 550025, China
| | - Zhi-Fang Chai
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- School of Radiological and Interdisciplinary Sciences (RAD-X), and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
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15
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Decomposition of d- and f-Shell Contributions to Uranium Bonding from the Quantum Theory of Atoms in Molecules: Application to Uranium and Uranyl Halides. INORGANICS 2018. [DOI: 10.3390/inorganics6030088] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The electronic structures of a series of uranium hexahalide and uranyl tetrahalide complexes were simulated at the density functional theoretical (DFT) level. The resulting electronic structures were analyzed using a novel application of the Quantum Theory of Atoms in Molecules (QTAIM) by exploiting the high symmetry of the complexes to determine 5f- and 6d-shell contributions to bonding via symmetry arguments. This analysis revealed fluoride ligation to result in strong bonds with a significant covalent character while ligation by chloride and bromide species resulted in more ionic interactions with little differentiation between the ligands. Fluoride ligands were also found to be most capable of perturbing an existing electronic structure. 5f contributions to overlap-driven covalency were found to be larger than 6d contributions for all interactions in all complexes studied while degeneracy-driven covalent contributions showed significantly greater variation. σ-contributions to degeneracy-driven covalency were found to be consistently larger than those of individual π-components while the total π-contribution was, in some cases, larger. Strong correlations were found between overlap-driven covalent bond contributions, U–O vibrational frequencies, and energetic stability, which indicates that overlap-driven covalency leads to bond stabilization in these complexes and that uranyl vibrational frequencies can be used to quantitatively probe equatorial bond covalency. For uranium hexahalides, degeneracy-driven covalency was found to anti-correlate with bond stability.
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16
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Yi X, Liu K, Chen W, Li J, Xu S, Li C, Xiao Y, Liu H, Guo X, Liu SB, Zheng A. Origin and Structural Characteristics of Tri-coordinated Extra-framework Aluminum Species in Dealuminated Zeolites. J Am Chem Soc 2018; 140:10764-10774. [DOI: 10.1021/jacs.8b04819] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xianfeng Yi
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Kangyu Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Stable and Unstable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Junjie Li
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Chengbin Li
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Yao Xiao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Haichao Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Stable and Unstable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Xinwen Guo
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Shang-Bin Liu
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- Wuhan-Oxford Joint Catalysis Laboratory, Wuhan 430071, P. R. China
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17
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Kong XH, Wu QY, Wang CZ, Lan JH, Chai ZF, Nie CM, Shi WQ. Insight into the Extraction Mechanism of Americium(III) over Europium(III) with Pyridylpyrazole: A Relativistic Quantum Chemistry Study. J Phys Chem A 2018; 122:4499-4507. [DOI: 10.1021/acs.jpca.8b00177] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiang-He Kong
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- School of Nuclear Resources Engineering, University of South China, Hengyang 421001, China
| | - Qun-Yan Wu
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Cong-Zhi Wang
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian-Hui Lan
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhi-Fang Chai
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- School of Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Chang-Ming Nie
- School of Nuclear Resources Engineering, University of South China, Hengyang 421001, China
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
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18
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Kerridge A. Quantification of f-element covalency through analysis of the electron density: insights from simulation. Chem Commun (Camb) 2018; 53:6685-6695. [PMID: 28569895 DOI: 10.1039/c7cc00962c] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The electronic structure of f-element compounds is complex due to a combination of relativistic effects, strong electron correlation and weak crystal field environments. However, a quantitative understanding of bonding in these compounds is becoming increasingly technologically relevant. Recently, bonding interpretations based on analyses of the physically observable electronic density have gained popularity and, in this Feature Article, the utility of such density-based approaches is demonstrated. Application of Bader's Quantum Theory of Atoms in Molecules (QTAIM) is shown to elucidate many properties including bonding trends, orbital overlap and energy degeneracy-driven covalency, oxidation state identification and bond stability, demonstrating the increasingly important role that simulation and analysis play in the area of f-element bond characterisation.
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Affiliation(s)
- A Kerridge
- Department of Chemistry, Faraday Building, Lancaster University, Lancaster, LA1 4YB, UK.
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19
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Huang PW, Wang CZ, Wu QY, Lan JH, Song G, Chai ZF, Shi WQ. Uncovering the impact of 'capsule' shaped amine-type ligands on Am(iii)/Eu(iii) separation. Phys Chem Chem Phys 2018; 20:1030-1038. [PMID: 29236107 DOI: 10.1039/c7cp05381a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Separation of trivalent actinides (An(iii)) and lanthanides (Ln(iii)) in spent nuclear fuel reprocessing is extremely challenging mainly owing to their similar chemical properties. Two amine-type reagents, tetrakis(2-pyridyl-methyl)-1,2-ethylenediamine (TPEN) and its hydrophobic derivative N,N,N',N'-tetrakis((4-butoxypyridin-2-yl)methyl)-ethylenediamine (TBPEN), have been identified to possess a selectivity for Am(iii) over Eu(iii). In this work, the structures, bonding nature, and thermodynamic behaviors of the Am(iii) and Eu(iii) complexes with these two ligands have been systematically studied via scalar relativistic density functional theory (DFT) calculations. According to Mayer bond order and the quantum theory of atoms in molecules (QTAIM) analyses, interactions between the ligands and metal cations exhibit some degree of covalent character with relatively more covalency for Am(iii) complexes. In comparison with TPEN, TBPEN has better extractability but worse separation ability for Am(iii) and Eu(iii). Four nitrogen atoms in pyridine moieties may be responsible for the different extraction abilities of TPEN and TBPEN, while two nitrogen atoms in amine chains of these ligands appear to play more important roles in the separation of Am(iii)/Eu(iii). These different extraction behaviors may be attributed to the longer and thinner 'capsule' shaped TBPEN ligand compared to TPEN. Our study might provide new insights into understanding the selectivity of the amine-type ligands toward minor actinides, and pave the way for designing new TPEN derivatives for extraction and separation of An(iii)/Ln(iii).
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Affiliation(s)
- Pin-Wen Huang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
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20
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Audras M, Berthon L, Berthon C, Guillaumont D, Dumas T, Illy MC, Martin N, Zilbermann I, Moiseev Y, Ben-Eliyahu Y, Bettelheim A, Cammelli S, Hennig C, Moisy P. Structural Characterization of Am(III)- and Pu(III)-DOTA Complexes. Inorg Chem 2017; 56:12248-12259. [DOI: 10.1021/acs.inorgchem.7b01666] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthieu Audras
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - Laurence Berthon
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - Claude Berthon
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - Dominique Guillaumont
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - Thomas Dumas
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - Marie-Claire Illy
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - Nicolas Martin
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
| | - Israel Zilbermann
- Chemistry Department, Nuclear Research Centre Negev, IL-84190 Beer Sheva, Israel
| | - Yulia Moiseev
- Chemistry Department, Nuclear Research Centre Negev, IL-84190 Beer Sheva, Israel
| | | | - Armand Bettelheim
- Chemical Engineering
Department, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Sebastiano Cammelli
- Synchrotron SOLEIL, L’Orme des Merisiers, BP
48, Saint Aubin, Gif sur Yvette 91192, France
| | - Christoph Hennig
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstr. 400, D-01328 Dresden, Germany
| | - Philippe Moisy
- Nuclear Energy Division,
Research Department on Mining and Fuel Recycling Processes, CEA, BP17171 F-30207 Bagnols-sur-Cèze, France
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21
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Savarese M, Guido CA, Brémond E, Ciofini I, Adamo C. Metrics for Molecular Electronic Excitations: A Comparison between Orbital- and Density-Based Descriptors. J Phys Chem A 2017; 121:7543-7549. [DOI: 10.1021/acs.jpca.7b07080] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marika Savarese
- CompuNet, Istituto Italiano di Tecnologia, via Morego 30, I-16163 Genoa, Italy
| | - Ciro Achille Guido
- Laboratoire CEISAM−UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Eric Brémond
- CompuNet, Istituto Italiano di Tecnologia, via Morego 30, I-16163 Genoa, Italy
| | - Ilaria Ciofini
- Chimie ParisTech, PSL Research University, CNRS,
Institut de Recherche de Chimie Paris, F-75005 Paris, France
| | - Carlo Adamo
- Chimie ParisTech, PSL Research University, CNRS,
Institut de Recherche de Chimie Paris, F-75005 Paris, France
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22
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23
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Mounce AM, Yasuoka H, Koutroulakis G, Lee JA, Cho H, Gendron F, Zurek E, Scott BL, Trujillo JA, Slemmons AK, Cross JN, Thompson JD, Kozimor SA, Bauer ED, Autschbach J, Clark DL. Nuclear Magnetic Resonance Measurements and Electronic Structure of Pu(IV) in [(Me)4N]2PuCl6. Inorg Chem 2016; 55:8371-80. [PMID: 27513717 DOI: 10.1021/acs.inorgchem.6b00735] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew M. Mounce
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Hiroshi Yasuoka
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Georgios Koutroulakis
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
- University of California Los Angeles, Los Angeles, California 90095, United States
| | - Jeongseop A. Lee
- Department
of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, United States
| | - Herman Cho
- Fundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Frédéric Gendron
- Department
of Chemistry, University of Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
| | - Eva Zurek
- Department
of Chemistry, University of Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
| | - Brian L. Scott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Julie A. Trujillo
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Alice K. Slemmons
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Justin N. Cross
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Joe D. Thompson
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Stosh A. Kozimor
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Eric D. Bauer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
| | - Jochen Autschbach
- Department
of Chemistry, University of Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
| | - David L. Clark
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
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24
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Lucena AF, Carretas JM, Marçalo J, Michelini MC, Gong Y, Gibson JK. Gas-Phase Reactions of Molecular Oxygen with Uranyl(V) Anionic Complexes—Synthesis and Characterization of New Superoxides of Uranyl(VI). J Phys Chem A 2015; 119:3628-35. [DOI: 10.1021/acs.jpca.5b01445] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ana F. Lucena
- Centro
de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - José M. Carretas
- Centro
de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Joaquim Marçalo
- Centro
de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Maria C. Michelini
- Dipartimento
di Chimica, Università della Calabria, 87030 Arcavacata di Rende, Italy
| | - Yu Gong
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - John K. Gibson
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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25
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Wu QY, Lan JH, Wang CZ, Zhao YL, Chai ZF, Shi WQ. Terminal U≡E (E = N, P, As, Sb, and Bi) bonds in uranium complexes: a theoretical perspective. J Phys Chem A 2015; 119:922-30. [PMID: 25584689 DOI: 10.1021/jp512950j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The compound L-U-N [L = [N(CH2CH2NSiPr(i)3)3](3-), Pr(i) = CH(CH3)2] containing a terminal U-N triple bond has been synthesized and isolated successfully in experiments. To investigate the trend in the bonding nature of its pnictogen analogues, we have studied the L-U-E (E = N, P, As, Sb, and Bi) complexes using the scalar relativistic density functional theory. The terminal U-E multiple bond length increases in the order of U-N ≪ U-P < U-As < U-Sb < U-Bi, which can be supported by the hard and soft acids and bases (HSAB) theory. The U-E bond length, molecular orbital (MO), and natural bond orbital (NBO) reveal that the terminal U-E bonds should be genuine triple bonds containing one σ- and two π-bonding orbitals. Quantum theory of atoms in molecules (QTAIM) topological analysis and the electron localization function (ELF) suggest that the terminal U-E bond possesses covalent character and the covalency of U-E bonds decrease sharply when the terminal atom becomes heavier. This work presents a comparison about the bonding characteristic between the terminal U≡N bond and its heavier pnictogen (P, As, Sb, and Bi) analogues. It is expected that this work would shed light on the evaluation of the amount of 5f orbital participation in multiple bonds and further facilitate our deeper understanding of f-block elements.
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Affiliation(s)
- Qun-Yan Wu
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
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26
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Xiao CL, Wang CZ, Mei L, Zhang XR, Wall N, Zhao YL, Chai ZF, Shi WQ. Europium, uranyl, and thorium-phenanthroline amide complexes in acetonitrile solution: an ESI-MS and DFT combined investigation. Dalton Trans 2015. [DOI: 10.1039/c5dt01766a] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ESI-MS and density functional theory (DFT) methods were combined to elucidate the complexation mechanisms of tetradentate phenanthroline amide ligand with Eu(iii), U(vi), and Th(iv) in an acetonitrile solution.
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Affiliation(s)
- Cheng-Liang Xiao
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Soochow University
- Suzhou 215123
- China
- Laboratory of Nuclear Energy Chemistry and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety
| | - Cong-Zhi Wang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Xin-Rui Zhang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Nathalie Wall
- Chemistry Department
- Washington State University
- Pullman 99164-4630
- USA
| | - Yu-Liang Zhao
- Laboratory of Nuclear Energy Chemistry and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Zhi-Fang Chai
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Soochow University
- Suzhou 215123
- China
- Laboratory of Nuclear Energy Chemistry and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
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27
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Wu H, Wu QY, Wang CZ, Lan JH, Liu ZR, Chai ZF, Shi WQ. Theoretical insights into the separation of Am(iii) over Eu(iii) with PhenBHPPA. Dalton Trans 2015; 44:16737-45. [DOI: 10.1039/c5dt02528a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Due to the similar chemical properties of actinides An(iii) and lanthanides Ln(iii), their separation in spent nuclear fuel reprocessing is extremely challenging.
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Affiliation(s)
- Han Wu
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Qun-Yan Wu
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Cong-Zhi Wang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Jian-Hui Lan
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Zhi-Rong Liu
- School of Nuclear Engineering and Geophysics
- East China Institute of Technology
- Nanchang 330013
- China
| | - Zhi-Fang Chai
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100049
- China
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28
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Hashem E, Platts JA, Hartl F, Lorusso G, Evangelisti M, Schulzke C, Baker RJ. Thiocyanate complexes of uranium in multiple oxidation states: a combined structural, magnetic, spectroscopic, spectroelectrochemical, and theoretical study. Inorg Chem 2014; 53:8624-37. [PMID: 25072532 DOI: 10.1021/ic501236j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A comprehensive study of the complexes A4[U(NCS)8] (A = Cs, Et4N, (n)Bu4N) and A3[UO2(NCS)5] (A = Cs, Et4N) is described, with the crystal structures of [(n)Bu4N]4[U(NCS)8]·2MeCN and Cs3[UO2(NCS)5]·O0.5 reported. The magnetic properties of square antiprismatic Cs4[U(NCS)8] and cubic [Et4N]4[U(NCS)8] have been probed by SQUID magnetometry. The geometry has an important impact on the low-temperature magnetic moments: at 2 K, μeff = 1.21 μB and 0.53 μB, respectively. Electronic absorption and photoluminescence spectra of the uranium(IV) compounds have been measured. The redox chemistry of [Et4N]4[U(NCS)8] has been explored using IR and UV-vis spectroelectrochemical methods. Reversible 1-electron oxidation of one of the coordinated thiocyanate ligands occurs at +0.22 V vs Fc/Fc(+), followed by an irreversible oxidation to form dithiocyanogen (NCS)2 which upon back reduction regenerates thiocyanate anions coordinating to UO2(2+). NBO calculations agree with the experimental spectra, suggesting that the initial electron loss of [U(NCS)8](4-) is delocalized over all NCS(-) ligands. Reduction of the uranyl(VI) complex [Et4N]3[UO2(NCS)5] to uranyl(V) is accompanied by immediate disproportionation and has only been studied by DFT methods. The bonding in [An(NCS)8](4-) (An = Th, U) and [UO2(NCS)5](3-) has been explored by a combination of DFT and QTAIM analysis, and the U-N bonds are predominantly ionic, with the uranyl(V) species more ionic that the uranyl(VI) ion. Additionally, the U(IV)-NCS ion is more ionic than what was found for U(IV)-Cl complexes.
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Affiliation(s)
- Emtithal Hashem
- School of Chemistry, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
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29
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Yang X, Liang Y, Ding S, Li S, Chai Z, Wang D. Influence of a Bridging Group and the Substitution Effect of Bis(1,2,4-triazine) N-Donor Extractants on Their Interactions with a NpV Cation. Inorg Chem 2014; 53:7848-60. [DOI: 10.1021/ic500138w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xia Yang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yanni Liang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- College of Chemistry, Sichuan University, Chengdu, China
| | - Songdong Ding
- College of Chemistry, Sichuan University, Chengdu, China
| | - Shoujian Li
- College of Chemistry, Sichuan University, Chengdu, China
| | - Zhifang Chai
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- School of Radiation Medicine
and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou 215123, China
| | - Dongqi Wang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Energy
Techniques, and Multidisciplinary Initiative Center, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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30
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31
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Zaiter A, Amine B, Bouzidi Y, Belkhiri L, Boucekkine A, Ephritikhine M. Selectivity of Azine Ligands Toward Lanthanide(III)/Actinide(III) Differentiation: A Relativistic DFT Based Rationalization. Inorg Chem 2014; 53:4687-97. [DOI: 10.1021/ic500361b] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Abdellah Zaiter
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Boudersa Amine
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Yamina Bouzidi
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Lotfi Belkhiri
- URCHEMS, Université Constantine 1 (ex. Mentouri), route
de Ain El Bey, 25017 Constantine, Algeria
| | - Abdou Boucekkine
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de
Beaulieu, 35042 Rennes Cedex, France
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32
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Nelyubina YV, Puntus LN, Lyssenko KA. The Dark Side of Hydrogen Bonds in the Design of Optical Materials: A Charge-Density Perspective. Chemistry 2014; 20:2860-5. [DOI: 10.1002/chem.201300566] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 12/13/2013] [Indexed: 12/12/2022]
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33
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Pereira CCL, Michelini MDC, Marçalo J, Gong Y, Gibson JK. Synthesis and properties of uranium sulfide cations. An evaluation of the stability of thiouranyl, {S═U═S}2+. Inorg Chem 2013; 52:14162-7. [PMID: 24256167 DOI: 10.1021/ic4020493] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Atomic uranium cations, U(+) and U(2+), reacted with the facile sulfur-atom donor OCS to produce several monopositive and dipositive uranium sulfide species containing up to four sulfur atoms. Sequential abstraction of two sulfur atoms by U(2+) resulted in US2(2+); density functional theory computations indicate that the ground-state structure for this species is side-on η(2)-S2 triangular US2(2+), with the linear thiouranyl isomer, {S═U(VI)═S}(2+), some 171 kJ mol(-1) higher in energy. The result that the linear thiouranyl structure is a local minimum at a moderate energy suggests that it should be feasible to stabilize this moiety in molecular compounds.
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Affiliation(s)
- Cláudia C L Pereira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa , 2695-066 Bobadela LRS, Portugal
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34
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Hancock RD, Bartolotti LJ. A DFT study of the affinity of lanthanide and actinide ions for sulfur-donor and nitrogen-donor ligands in aqueous solution. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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35
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Benay G, Wipff G. Oil-Soluble and Water-Soluble BTPhens and Their Europium Complexes in Octanol/Water Solutions: Interface Crossing Studied by MD and PMF Simulations. J Phys Chem B 2013; 117:1110-22. [DOI: 10.1021/jp3103707] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- G. Benay
- Laboratoire MSM, UMR CNRS 7177, Institut de Chimie,
1, rue B. Pascal, 67 000 Strasbourg, France
| | - G. Wipff
- Laboratoire MSM, UMR CNRS 7177, Institut de Chimie,
1, rue B. Pascal, 67 000 Strasbourg, France
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36
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Roy LE, Bridges NJ, Martin LR. Theoretical insights into covalency driven f element separations. Dalton Trans 2013; 42:2636-42. [DOI: 10.1039/c2dt31485a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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37
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Hancock RD. The pyridyl group in ligand design for selective metal ion complexation and sensing. Chem Soc Rev 2013; 42:1500-24. [DOI: 10.1039/c2cs35224a] [Citation(s) in RCA: 251] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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38
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Chen F, Wang C, Shi W, Zhang M, Liu C, Zhao Y, Chai Z. Two new uranyl fluoride complexes with UVIO–alkali (Na, Cs) interactions: Experimental and theoretical studies. CrystEngComm 2013. [DOI: 10.1039/c3ce41261j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Hashem E, Swinburne AN, Schulzke C, Evans RC, Platts JA, Kerridge A, Natrajan LS, Baker RJ. Emission spectroscopy of uranium(iv) compounds: a combined synthetic, spectroscopic and computational study. RSC Adv 2013. [DOI: 10.1039/c3ra22712j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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40
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Carolan AN, Cockrell GM, Williams NJ, Zhang G, VanDerveer DG, Lee HS, Thummel RP, Hancock. RD. Selectivity of the Highly Preorganized Tetradentate Ligand 2,9-Di(pyrid-2-yl)-1,10-phenanthroline for Metal Ions in Aqueous Solution, Including Lanthanide(III) Ions and the Uranyl(VI) Cation. Inorg Chem 2012; 52:15-27. [DOI: 10.1021/ic3002509] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ashley N. Carolan
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Gregory M. Cockrell
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Neil J. Williams
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Gang Zhang
- Department
of Chemistry, University of Houston, Houston,
Texas 77004, United States
| | - Donald G. VanDerveer
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Hee-Seung Lee
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
| | - Randolph P. Thummel
- Department
of Chemistry, University of Houston, Houston,
Texas 77004, United States
| | - Robert D. Hancock.
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina
28403, United States
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41
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Lan JH, Shi WQ, Yuan LY, Li J, Zhao YL, Chai ZF. Recent advances in computational modeling and simulations on the An(III)/Ln(III) separation process. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.04.002] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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42
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Kaltsoyannis N. Does covalency increase or decrease across the actinide series? Implications for minor actinide partitioning. Inorg Chem 2012; 52:3407-13. [PMID: 22668004 DOI: 10.1021/ic3006025] [Citation(s) in RCA: 269] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A covalent chemical bond carries the connotation of overlap of atomic orbitals between bonded atoms, leading to a buildup of the electron density in the internuclear region. Stabilization of the valence 5f orbitals as the actinide series is crossed leads, in compounds of the minor actinides americium and curium, to their becoming approximately degenerate with the highest occupied ligand levels and hence to the unusual situation in which the resultant valence molecular orbitals have significant contributions from both actinide and the ligand yet in which there is little atomic orbital overlap. In such cases, the traditional quantum-chemical tools for assessing the covalency, e.g., population analysis and spin densities, predict significant metal-ligand covalency, although whether this orbital mixing is really covalency in the generally accepted chemical view is an interesting question. This review discusses our recent analyses of the bonding in AnCp3 and AnCp4 (An = Th-Cm; Cp = η(5)-C5H5) using both the traditional tools and also topological analysis of the electron density via the quantum theory of atoms-in-molecules. I will show that the two approaches yield rather different conclusions and suggest that care must be taken when using quantum chemistry to assess metal-ligand covalency in this part of the periodic table. The implications of this work for minor actinide partitioning from nuclear wastes are discussed; minor actinide extractant ligands based on nitrogen donors have received much attention in recent years, as have comparisons of the extent of covalency in actinide-nitrogen bonding with that in analogous lanthanide systems via quantum-chemical studies employing the traditional tools for assessing the covalency.
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Affiliation(s)
- Nikolas Kaltsoyannis
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
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43
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Manna D, Ghanty TK. Complexation behavior of trivalent actinides and lanthanides with 1,10-phenanthroline-2,9-dicarboxylic acid based ligands: insight from density functional theory. Phys Chem Chem Phys 2012; 14:11060-9. [DOI: 10.1039/c2cp40083a] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Lan JH, Shi WQ, Yuan LY, Zhao YL, Li J, Chai ZF. Trivalent Actinide and Lanthanide Separations by Tetradentate Nitrogen Ligands: A Quantum Chemistry Study. Inorg Chem 2011; 50:9230-7. [DOI: 10.1021/ic200078j] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian-Hui Lan
- Nuclear Energy Nano-Chemistry Group, Key Laboratory of Nuclear Analytical Techniques and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Wei-Qun Shi
- Nuclear Energy Nano-Chemistry Group, Key Laboratory of Nuclear Analytical Techniques and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Yong Yuan
- Nuclear Energy Nano-Chemistry Group, Key Laboratory of Nuclear Analytical Techniques and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Liang Zhao
- Nuclear Energy Nano-Chemistry Group, Key Laboratory of Nuclear Analytical Techniques and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Zhi-Fang Chai
- Nuclear Energy Nano-Chemistry Group, Key Laboratory of Nuclear Analytical Techniques and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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45
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Páez-Hernández D, Murillo-López JA, Arratia-Pérez R. Bonding nature and electron delocalization of An(COT)2, An = Th, Pa, U. J Phys Chem A 2011; 115:8997-9003. [PMID: 21755962 DOI: 10.1021/jp203832m] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A systematic study of a series of An(COT)(2) compounds, where An = Th, Pa, U, and COT represents cyclooctatetraene, has been performed using relativistic density functional theory. The ZORA Hamiltonian was applied for the inclusion of relativistic effects, taking into account all of the electrons for the optimization and explicitly including spin-orbit coupling effects. Time-dependent density functional theory (TDDFT) was used to calculate the excitation energies with the GGA SAOP functional, and the electronic transitions were analyzed using double group irreducible representations. The calculated excitation energies are in perfect correlation with the increment of the ring delocalization as it increases along the actinide series. These results are sufficient to ensure that, for these complexes, the increment in delocalization, as indicated by ELF bifurcation and NICS analysis, leads to a shift in the maximum wavelength of absorption in the visible region. Also, delocalization in the COT ring increases along the actinide series, so the systems become more aromatic because of a modulation induced by the actinides.
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Affiliation(s)
- Dayán Páez-Hernández
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, República 275, Santiago, Chile.
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46
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Pantazis DA, Neese F. All-Electron Scalar Relativistic Basis Sets for the Actinides. J Chem Theory Comput 2011. [DOI: 10.1021/ct100736b] [Citation(s) in RCA: 199] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Dimitrios A. Pantazis
- Lehrstuhl für Theoretische Chemie, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstrasse 12, D-53115 Bonn, Germany
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Frank Neese
- Lehrstuhl für Theoretische Chemie, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstrasse 12, D-53115 Bonn, Germany
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
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47
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Merrill D, Hancock RD. Metal ion selectivities of the highly preorganized tetradentate ligand 1,10-phenanthroline-2,9-dicarboxamide with lanthanide(III) ions and some actinide ions. RADIOCHIM ACTA 2011. [DOI: 10.1524/ract.2011.1805] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Metal ion complexing properties of the ligand PDAM (1,10-phenanthroline-2,9-dicarboxamide) are reported in relation to its possible use as a functional group for solvent extractants in the separation of Am(III) from Ln(III) (lanthanide) ions. PDAM is only slightly water soluble, but variation of the intense π–π* transitions in the UV spectrum of 2×10−5 M PDAM solutions as a function of pH or metal ion concentration allowed for the determination of the protonation constant (pK) and logK
1 values with metal ions. The pK of PDAM is 0.6±0.1 in 1.0 M NaClO4, the lowest for any 1,10-phenanthroline (phen) derivative (in contrast, pK phen=5.1), which is attributed to the electron-withdrawing properties of the amide substituents of PDAM. The weak proton basicity of PDAM may be an important factor in its use as the functional group of a solvent extractant from acidic solutions. The formation constants are determined by UV-Visible spectroscopy for the Ln(III) ions from La(III) to Lu(III) (excluding Pm(III)), as well as for Y(III), Sc(III), Th(IV), and the UO2
2+ cation in 0.1 M NaClO4 at 25 °C. The logK
1 values for the Ln(III) ions show only small changes from La(III) to Lu(III) (both have logK
1 = 3.80). The amide O-donors (oxygen donors) of the amide groups of PDAM appear to cause considerable stabilization of the complexes of PDAM as compared to those of phen, consistent with the idea that the neutral O-donor is a strong Lewis base towards large metal ions such as the Ln(III) ions. A reviewer has pointed out that the amide groups would also stabilize the complexes of PDAM by virtue of the chelate effect, in that PDAM is tetradentate, while phen is only bidentate. The small change in complex stability for PDAM complexes in passing from La(III) to Lu(III) is rationalized in terms of the idea that neutral O-donors stabilize the complexes of the large La(III) ion more than the smaller Lu(III) ion, offsetting the greater affinity of Lu(III) than La(III) for N-donor ligands. The complexes of Th(IV), Sc(III), and the UO2
2+ cation with PDAM have logK
1 values slightly higher than those of the Ln(III) cations, while Y(III) forms a slightly less stable complex. The best-fit size of metal ion for coordination with PDAM is analyzed using molecular mechanics calculations. A fluorescence study shows that the free ligand PDAM fluoresces very strongly, but that the Ln(III) cations quench the fluorescence of PDAM rather than produce a chelation enhanced fluorescence (CHEF) effect as Ln(III) ions do with other phen-based tetradentate ligands. Possible reasons for the lack of a CHEF effect with PDAM are discussed.
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Affiliation(s)
- Danielle Merrill
- University of North Carolina at Wilmington, Department of Chemistry and Biochemistry, Wilmington NC 28403, U.S.A
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48
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Benay G, Schurhammer R, Desaphy J, Wipff G. Substituent effects on BTP's basicity and complexation properties with LnIIIlanthanide ions. NEW J CHEM 2011. [DOI: 10.1039/c0nj00527d] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Prestianni A, Joubert L, Chagnes A, Cote G, Adamo C. A density functional theory study of uranium(vi) nitrate monoamide complexes. Phys Chem Chem Phys 2011; 13:19371-7. [DOI: 10.1039/c1cp22320h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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50
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Benay G, Schurhammer R, Wipff G. Basicity, complexation ability and interfacial behavior of BTBPs: a simulation study. Phys Chem Chem Phys 2011; 13:2922-34. [DOI: 10.1039/c0cp01975e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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