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Bubas AR, Tatosian IJ, Iacovino A, Corcovilos TA, van Stipdonk MJ. Reactions of gas-phase uranyl formate/acetate anions: reduction of carboxylate ligands to aldehydes by intra-complex hydride attack. Phys Chem Chem Phys 2024; 26:12753-12763. [PMID: 38619367 DOI: 10.1039/d4cp00823e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
In a previous study, electrospray ionization, collision-induced dissociation (CID), and gas-phase ion-molecule reactions were used to create and characterize ions derived from homogeneous precursors composed of a uranyl cation (UVIO22+) coordinated by either formate or acetate ligands [E. Perez, C. Hanley, S. Koehler, J. Pestok, N. Polonsky and M. Van Stipdonk, Gas phase reactions of ions derived from anionic uranyl formate and uranyl acetate complexes, J. Am. Soc. Mass Spectrom., 2016, 27, 1989-1998]. Here, we describe a follow-up study of anionic complexes that contain a mix of formate and acetate ligands, namely [UO2(O2C-CH3)2(O2C-H)]- and [UO2(O2C-CH3)(O2C-H)2]-. Initial CID of either anion causes decarboxylation of a formate ligand to create carboxylate-coordinated U-hydride product ions. Subsequent CID of the hydride species causes elimination of acetaldehyde or formaldehyde, consistent with reactions that include intra-complex hydride attack upon bound acetate or formate ligands, respectively. Density functional theory (DFT) calculations reproduce the experimental observations, including the favored elimination of formaldehyde over acetaldehyde by hydride attack during CID of [UO2(H)(O2C-CH3)(O2C-H)]-. We also discovered that MSn CID of the acetate-formate complexes leads to generation of the oxyl-methide species, [UO2(O)(CH3)]-, which reacts with H2O to generate [UO2(O)(OH)]-. DFT calculations support the observation that formation of [UO2(O)(OH)]- by elimination of CH4 is favored over H2O addition and rearrangement to create [UO2(OH)2(CH3)]-.
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Affiliation(s)
- Amanda R Bubas
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave, Pittsburgh, PA 15282, USA.
| | - Irena J Tatosian
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave, Pittsburgh, PA 15282, USA.
| | - Anna Iacovino
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave, Pittsburgh, PA 15282, USA.
| | - Theodore A Corcovilos
- Department of Physics, Duquesne University, 600 Forbes Ave, Pittsburgh, PA 15282, USA
| | - Michael J van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave, Pittsburgh, PA 15282, USA.
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2
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Xu X, Jiang H, Wu K. Uranyl Affinity between Uranyl Cation and Different Kinds of Monovalent Anions: Density Functional Theory and Quantitative Structure-Property Relationship Model. J Phys Chem A 2024; 128:2960-2970. [PMID: 38576211 DOI: 10.1021/acs.jpca.4c00068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
In order to design effective extractants for uranium extraction from seawater, it is imperative to acquire a more comprehensive understanding of the bonding properties between the uranyl cation (UO22+) and various ligands. Therefore, we employed density functional theory to investigate the complexation reactions of UO22+ with 29 different monovalent anions (L-1), exploring both mono- and bidentate coordination. We proposed a novel concept called "uranyl affinity" (Eua) to facilitate the establishment of a standardized scale for assessing the ease or difficulty of coordination bond formation between UO22+ and diverse ligands. Furthermore, we conducted an in-depth investigation into the underlying mechanisms involved. During the process of uranyl complex [(UO2L)+] formation, lone pair electrons from the coordinating atom in L- are transferred to either the lowest unoccupied molecular degenerate orbitals 1ϕu or 1δu of the uranyl ion, which originate from the uranium atom's 5f unoccupied orbitals. In light of discussion concerning the mechanisms of coordination bond formation, quantitative structure-property relationship analyses were conducted to investigate the correlation between Eua and various structural descriptors associated with the 29 ligands under investigation. This analysis revealed distinct patterns in Eua values while identifying key influencing factors among the different ligands.
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Affiliation(s)
- Xiang Xu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Haiyan Jiang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Kechen Wu
- Fujian Key Laboratory of Functional Marine Sensing Materials, Minjiang University, Fuzhou 350108, China
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3
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Yang Y, Wei S, Zhao Z, Chen J, Wang J, Hu H, Minasian SG, Sun T. Synthesis, Structure, and Theoretical Calculations on NpO 2Br 42. Inorg Chem 2023; 62:13953-13963. [PMID: 37584949 DOI: 10.1021/acs.inorgchem.3c01891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
The actinide-halogen complexes (AnO2X42-, X = Cl, Br, and I) are the simplest and most representative compounds for studying the bonding nature of actinides with ligands. In this work, we attempted to synthesize the crystals of NpO2X42- (X = Cl, Br, and I). The crystals of NpO2Cl42- and NpO2Br42- were successfully synthesized, in which the structure of NpO2Br42- was obtained for the first time. The crystal of NpO2I42- could not be obtained due to the rapid reduction of Np(VI) to Np(V) by I-. The molecular structures of NpO2Cl42- and NpO2Br42- were characterized by single-crystal X-ray diffraction and infrared, Raman, and UV-Vis-NIR absorption spectroscopy. The complexes of NpO2X42- (X = Cl, Br, and I) were also investigated by density functional theory calculations, and the calculated vibration frequencies and absorption features were comparable to the experimental results. Both the experimental results and theoretical calculations demonstrate the strengthened Np-O bonds and the weakened Np-X bonds across the NpO2X42- series; however, the population analysis on the frontier molecular orbitals (MOs) of NpO2X42- indicates a slight reduction in the Np-O bonding covalency and an enhancement in the Np-X bonding covalency from NpO2Cl42- to NpO2I42-. Results in this work have enriched the crystal database of the AnO2X42- family and provided insights into the bonding nature in the actinide complexes with soft- and hard-donor ligands.
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Affiliation(s)
- Yuning Yang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Shiru Wei
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Zhijin Zhao
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Jianchen Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Hanshi Hu
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Stefan G Minasian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Taoxiang Sun
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
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4
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Wang C, Hu SX, Zhang L, Wang K, Liu HT, Zhang P. Trends in the Electronic Structure and Chemical Bonding of a Series of Porphyrinoid-Uranyl Complexes. Inorg Chem 2023; 62:5376-5386. [PMID: 36990449 DOI: 10.1021/acs.inorgchem.2c03986] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
In this paper, we have explored the relativistic density functional theory study on a series of deprotonated porphyrinoid (Ln) complexes of uranyl to investigate the geometrical structures and chemical bonding. The ligands bound with uranyl in the 1:1 complexes [UO2(Ln)]x (n = 4, 5, 6; x = 0, -1, -2), showing more thermodynamic stability for "in-cavity" structures of L5 and L6 than that of the "side-on" structure of L4 and an increase in stability with the increase of negative charges, L2- < L3- < L4-. Among the six ligands, the cyclo[6]pyrrole presents the best selectivity toward uranyl. Based on chemical bonding analyses, the U-NL bond in the in-cavity complexes adopts a typical dative NL → U bond with mainly ionic bonding and significant covalency, which comes from the significant orbital interaction of U 5fϕ6dδ7s hybrid AOs and NL 2p-based MOs. This work provides a systematic understanding of the coordination chemistry in uranyl pyrrole-containing macrocycle complexes and the nature of chemical bonding in such systems, which may provide inspirations for the future design of synthetic targets that could be relevant to actinide separations or in the remediation of spent nuclear fuel.
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Affiliation(s)
- Cong Wang
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Shu-Xian Hu
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Lu Zhang
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - Kai Wang
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Hai-Tao Liu
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Ping Zhang
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
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Hong J, Han C, Fei Z, Tang Y, Liu Y, Xu HG, Wang M, Liu H, Xiong XG, Dong C. The additional nitrogen atom breaks the uranyl structure: a combined photoelectron spectroscopy and theoretical study of NUO 2. Phys Chem Chem Phys 2023; 25:4794-4802. [PMID: 36692210 DOI: 10.1039/d2cp05544a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We report a joint photoelectron spectroscopic and relativistic quantum chemistry study on gaseous NUO2-. The electron affinity (EA) of the neutral NUO2 molecule is reported for the first time with a value of 2.602(28) eV. The U-O and U-N stretching vibrational modes for the ground state and the first excited state are observed for NUO2. The geometric and electronic structures of both the anions and the corresponding neutrals are investigated by relativistic quantum chemistry calculations to interpret the photoelectron spectra and to provide insights into the nature of the chemical bonding. Both the ground state of the anion and neutral are calculated to be planar structures with C2v symmetry. Unlike the "T"-shape structure of UO3 which has a quasi-linear O-U-O angle, both the ground-state geometries of the anion and neutral have O-U-O bond angles of around 90°. The significant contraction of the O-U-O bond angle indicates the strong interaction between the U and N atoms compared with the "additional" oxygen in UO3. The chemical bonding calculation indicates that multiple bonding of U(VI) can occur in NUO2- and NUO2, and the UVI-N bond is significantly more covalent than the U-O bond. The current experimental and theoretical results reveal the difference between the U-N and U-O bond in the unified molecular system, and expand our understanding of the bonding capacities of actinide elements with the nitrogen atom.
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Affiliation(s)
- Jing Hong
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China. .,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Changcai Han
- Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, Shanghai, 200092, P. R. China
| | - Zejie Fei
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.
| | - Yuanyuan Tang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.
| | - Yancheng Liu
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.
| | - Hong-Guang Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Mingqing Wang
- Yankuang New Energy R&D Innovation Centre, Shandong Energy Group Co., LTD, China
| | - Hongtao Liu
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.
| | - Xiao-Gen Xiong
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P. R. China.
| | - Changwu Dong
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.
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6
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Zhang Y, Duan W, Yang Y, Jian T, Qiao Y, Ren G, Zhang N, Zheng L, Yan W, Wang J, Chen J, Minasian SG, Sun T. Involvement of 5f Orbitals in the Covalent Bonding between the Uranyl Ion and Trialkyl Phosphine Oxide: Unraveled by Oxygen K-Edge X-ray Absorption Spectroscopy and Density Functional Theory. Inorg Chem 2021; 61:92-104. [PMID: 34817979 DOI: 10.1021/acs.inorgchem.1c02236] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Monodentate organophosphorus ligands have been used for the extraction of the uranyl ion (UO22+) for over half a century and have exhibited exceptional extractability and selectivity toward the uranyl ion due to the presence of the phosphoryl group (O═P). Tributyl phosphate (TBP) is the extractant of the world-renowned PUREX process, which selectively recovers uranium from spent nuclear fuel. Trialkyl phosphine oxide (TRPO) shows extractability toward the uranyl ion that far exceeds that for other metal ions, and it has been used in the TRPO process. To date, however, the mechanism of the high affinity of the phosphoryl group for UO22+ remains elusive. We herein investigate the bonding covalency in a series of complexes of UO22+ with TRPO by oxygen K-edge X-ray absorption spectroscopy (XAS) in combination with density functional theory (DFT) calculations. Four TRPO ligands with different R substituents are examined in this work, for which both the ligands and their uranyl complexes are crystallized and investigated. The study of the electronic structure of the TRPO ligands reveals that the two TRPO molecules, irrespective of their substituents, can engage in σ- and π-type interactions with U 5f and 6d orbitals in the UO2Cl2(TRPO)2 complexes. Although both the axial (Oyl) and equatorial (Oeq) oxygen atoms in the UO2Cl2(TRPO)2 complexes contribute to the X-ray absorption, the first pre-edge feature in the O K-edge XAS with a small intensity is exclusively contributed by Oeq and is assigned to the transition from Oeq 1s orbitals to the unoccupied molecular orbitals of 1b1u + 1b2u + 1b3u symmetries resulting from the σ- and π-type mixing between U 5f and Oeq 2p orbitals. The small intensity in the experimental spectra is consistent with the small amount of Oeq 2p character in these orbitals for the four UO2Cl2(TRPO)2 complexes as obtained by Mulliken population analysis. The DFT calculations demonstrate that the U 6d orbitals are also involved in the U-TRPO bonding interactions in the UO2Cl2(TRPO)2 complexes. The covalent bonding interactions between TRPO and UO22+, especially the contributions from U 5f orbitals, while appearing to be small, are sufficiently responsible for the exceptional extractability and selectivity of monodentate organophosphorus ligands for the uranyl ion. Our results provide valuable insight into the fundamental actinide chemistry and are expected to directly guide actinide separation schemes needed for the development of advanced nuclear fuel cycle technologies.
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Affiliation(s)
- Yusheng Zhang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Wuhua Duan
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Yuning Yang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Tian Jian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Yusen Qiao
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Guoxi Ren
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Nian Zhang
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Lei Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Wensheng Yan
- University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei 230029, China
| | - Jianchen Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Stefan G Minasian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Taoxiang Sun
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
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7
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Guo M, Wang Z, Lu Y, Wang F. Energy correction and analytic energy gradients due to triples in CCSD(T) with spin–orbit coupling on graphic processing units using single-precision data. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1974591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Minggang Guo
- Institute of Atomic and Molecular Physics, Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu, People’s Republic of China
| | - Zhifan Wang
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, People’s Republic of China
- School of Electronic Engineering, Chengdu Technological University, Chengdu, People’s Republic of China
| | - Yanzhao Lu
- Institute of Atomic and Molecular Physics, Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu, People’s Republic of China
| | - Fan Wang
- Institute of Atomic and Molecular Physics, Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu, People’s Republic of China
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8
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Jiang XL, Xu CQ, Lu JB, Cao CS, Schmidbaur H, Schwarz WHE, Li J. Electronic Structure and Spectroscopic Properties of Group-7 Tri-Oxo-Halides MO 3X (M = Mn-Bh, X = F-Ts). Inorg Chem 2021; 60:9504-9515. [PMID: 34152757 DOI: 10.1021/acs.inorgchem.1c00626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 24 trioxide halide molecules MO3X of the manganese group (M = Mn-Bh; X = F-Ts), which are iso-valence-electronic with the famous MnO4- ion, have been quantum-chemically investigated by quasi-relativistic density-functional and ab initio correlated approaches. Geometric and electronic structures, valence and oxidation numbers, vibrational and electronic spectral properties, energetic stabilities of the monomers in the gas phase, and the decay mode of MnO3F have been investigated. The light Mn-3d species are most strongly electron-correlated, indicating that the concept of a closed-shell Lewis-type single-configurational structure [Mn+7(d0) O-2(p6)3 F-(p6)] reaches its limits. The concept of real-valued spin orbitals φ(r)·α and φ(r)·β breaks down for the heavy Bh-6d, At-6p and Ts-7p elements because of the dominating spin-orbit coupling. The vigorous decomposition of MnO3F at ambient conditions starts by the autocatalyzed release of n O2 and the formation of MnmO3m-2nFm clusters, triggered by the electron-depleted "oxylic" character of the oxide ligands in MnO3X.
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Affiliation(s)
- Xue-Lian Jiang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Cong-Qiao Xu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun-Bo Lu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chang-Su Cao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Hubert Schmidbaur
- Department Chemie, Technische Universität München, Garching 85747, Germany
| | - W H Eugen Schwarz
- Department of Chemistry, Tsinghua University, Beijing 100084, China.,Department Chemie, Universität Siegen, Siegen 57068, Germany
| | - Jun Li
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Department of Chemistry, Tsinghua University, Beijing 100084, China
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9
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Bubas AR, Perez E, Metzler LJ, Rissler SD, Van Stipdonk MJ. Collision-induced dissociation of [UO 2 (NO 3 )(O 2 )] - and reactions of product ions with H 2 O and O 2. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4720. [PMID: 33813763 DOI: 10.1002/jms.4720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/23/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
We recently reported a detailed investigation of the collision-induced dissociation (CID) of [UO2 (NO3 )3 ]- and [UO2 (NO3 )2 (O2 )]- in a linear ion trap mass spectrometer (J. Mass Spectrom. DOI:10.1002/jms.4705). Here, we describe the CID of [UO2 (NO3 )(O2 )]- which is created directly by ESI, or indirectly by simple elimination of O2 from [UO2 (NO3 )(O2 )2 ]- . CID of [UO2 (NO3 )(O2 )]- creates product ions as at m/z 332 and m/z 318. The former may be formed directly by elimination of O2 , while the latter required decomposition of a nitrate ligand and elimination of NO2 . DFT calculations identify a pathway by which both product ions can be generated, which involves initial isomerization of [UO2 (NO3 )(O2 )]- to create [UO2 (O)(NO2 )(O2 )]- , from which elimination of NO2 or O2 will leave [UO2 (O)(O2 )]- or [UO2 (O)(NO2 )]- , respectively. For the latter product ion, the composition assignment of [UO2 (O)(NO2 )]- rather than [UO2 (NO3 )]- is supported by ion-molecule reaction behavior, and in particular, the fact that spontaneous addition of O2 , which is predicted to be the dominant reaction pathway for [UO2 (NO3 )]- is not observed. Instead, the species reacts with H2 O, which is predicted to be the favored pathway for [UO2 (O)(NO2 )]- . This result in particular demonstrates the utility of ion-molecule reactions to assist the determination of ion composition. As in our earlier study, we find that ions such as [UO2 (O)(NO2 )]- and [UO2 (O)(O2 )]- form H2 O adducts, and calculations suggest these species spontaneously rearrange to create dihydroxides.
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Affiliation(s)
- Amanda R Bubas
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
- Department of Chemistry, University of Utah, Salt Lake City, Utah, USA
| | - Evan Perez
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Luke J Metzler
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Scott D Rissler
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Michael J Van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
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10
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Bubas AR, Perez E, Metzler LJ, Rissler SD, Van Stipdonk MJ. Collision-induced dissociation of [UO 2 (NO 3 ) 3 ] - and [UO 2 (NO 3 ) 2 (O 2 )] - and reactions of product ions with H 2 O and O 2. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4705. [PMID: 33569852 DOI: 10.1002/jms.4705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/08/2021] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
Electrospray ionization (ESI) can produce a wide range of gas-phase uranyl (UO2 2+ ) complexes for tandem mass spectrometry studies of intrinsic structure and reactivity. We describe here the formation and collision-induced dissociation (CID) of [UO2 (NO3 )3 ]- and [UO2 (NO3 )2 (O2 )]- . Multiple-stage CID experiments reveal that the complexes dissociate in reactions that involve elimination of O2 , NO2 , or NO3 , and subsequent reactions of interesting uranyl-oxo product ions with (neutral) H2 O and/or O2 were investigated. Density functional theory (DFT) calculations reproduce experimental results and show that dissociation of nitrate ligands, with ejection of neutral NO2 , is favored for both [UO2 (NO3 )3 ]- and [UO2 (NO3 )2 (O2 )]- . DFT calculations also suggest that H2 O adducts to products such as [UO2 (O)(NO3 )]- spontaneously rearrange to create dihydroxides and that addition of O2 is favored over addition of H2 O to formally U(V) species.
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Affiliation(s)
- Amanda R Bubas
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
- Department of Chemistry, University of Utah, Salt Lake City, Utah, USA
| | - Evan Perez
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Luke J Metzler
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Scott D Rissler
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Michael J Van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
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11
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Wu QY, Wang CZ, Lan JH, Chai ZF, Shi WQ. Electronic structures and bonding of the actinide halides An(TREN TIPS)X (An = Th-Pu; X = F-I): a theoretical perspective. Dalton Trans 2020; 49:15895-15902. [PMID: 33164010 DOI: 10.1039/d0dt02909b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To evaluate how halogen and actinide atoms affect the electronic structures and bonding nature, we have theoretically investigated a series of the actinide halides An(TRENTIPS)X (An = Th-Pu; X = F-I); several of them have been synthesized by Liddle's group. The An-X bond distances decrease from An = Th to Pu for the same halides, and the harmonic vibrational frequencies for the An-X bonds are more susceptible to being affected by the halogen atoms. The analyses of bonding nature reveal that the An-X bonds have a certain covalency with a polarized character, and the σ-bonding component in the total orbital contribution is greatly larger than the corresponding π-bonding ones based on the analysis of the NOCVs (the natural orbitals for chemical valence). Furthermore, the electronic structures of the thorium complexes are obviously different from those of the uranium and transuranic analogues due to more valence electrons in Th 6d orbitals. In addition, thermodynamic results suggest that the U(TRENTIPS)Br complex is the most stable and U(TRENTIPS)Cl has the highest reactivity based on the halide exchange reaction of U(TRENTIPS)X complexes using Me3SiX. The reduction ability of the tetravalent An(TRENTIPS)X is sensitive to halogen atoms according to the calculated electron affinity of the An(TRENTIPS)X and the reactions An(TRENTIPS)X + K → An(TRENTIPS) + KX. This work presents the effect of the halogen and the actinide atoms on the structures, bonding nature and redox ability of a series of the tetravalent actinide halides with TREN ligand and facilitates our in-depth understanding of f-block elements, which could provide theoretical guidance for experimental work on actinide halides, especially for the synthetic chemistry of transuranic halides.
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Affiliation(s)
- 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. and Engineering Laboratory of Nuclear Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, 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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12
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Zhang P, Liu H, Zou W, Zhang P, Hu SX. Relativistic Effects Stabilize the Planar Wheel-like Structure of Actinide-Doped Gold Clusters: An@Au 7 (An = Th to Cm). J Phys Chem A 2020; 124:8173-8183. [PMID: 32845148 DOI: 10.1021/acs.jpca.0c02148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Despite the chemistry of actinide-ligand bonding is continuing and of burgeoning interest, investigations of the chemical bonding of bimetallic complexes involving transuranics remain relatively less, and there are rarely studies on the bonding features between actinide and coinage metals (CM). We present a systematic research on the series of An@Au7 (An = Th to Cm), UCM7 (CM = Cu, Ag, Au), and WAu7 clusters to investigate the unique geometries, electronic structures, and chemical bonding between An 5f6d orbitals and CM ns orbitals, and to find their periodicity across the actinides and within the group of transition metals. A unique planar wheel-like structure for An@Au7 clusters with the help of actinide metals encapsulation via spin-orbit coupling, resulting in An(III). Instead, the transition-metal (TM) element W retains its usual six-gold-coordination structure in WAu7, thus forcing the seventh Au out of plane. The An-CM interactions, depending on the ion radii, become stronger with the increase of the atomic number of the actinide metals, as well as the CM. These results show that the presence of actinides in clusters can lead to unique electronic and geometrical structures.
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Affiliation(s)
- Peng Zhang
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Haitao Liu
- Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Wenli Zou
- Institute of Modern Physics, Northwest University and Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi'an 710127, China
| | - Ping Zhang
- Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Shu-Xian Hu
- Beijing Computational Science Research Center, Beijing 100193, China
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13
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Liu G, Zhang C, Ciborowski SM, Asthana A, Cheng L, Bowen KH. Mapping the Electronic Structure of the Uranium(VI) Dinitride Molecule, UN 2. J Phys Chem A 2020; 124:6486-6492. [PMID: 32700533 DOI: 10.1021/acs.jpca.0c03735] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A combined anion photoelectron spectroscopic and relativistic coupled-cluster computational study of the electronic structure of the UN2 molecule is presented. Because the photoelectron spectrum of the uranium dinitride negative ion, UN2-, directly reflects the electronic structure of neutral UN2, we have measured and relied upon the photoelectron spectrum of the UN2- anion as a means of mapping the electronic structure of neutral UN2. In addition to the electron affinity of the UN2 ground state, energy levels of the UN2 excited states were well characterized by the close interplay between the experiment and high-level theory. We found that both electron attachment and electronic excitation significantly bend the UN2 molecule and elongate its U≡N bond. Implications for the activation of UN2 are discussed.
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Affiliation(s)
- Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Chaoqun Zhang
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Sandra M Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Ayush Asthana
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Lan Cheng
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kit H Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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14
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Pyrch MM, Williams JM, Kasperski MW, Applegate LC, Forbes TZ. Synthesis and spectroscopic characterization of actinyl(VI) tetrahalide coordination compounds containing 2, 2′-bipyridine. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Sorbelli D, Belanzoni P, Saue T, Belpassi L. Ground and excited electronic states of AuH 2via detachment energies on AuH 2− using state-of-the-art relativistic calculations. Phys Chem Chem Phys 2020; 22:26742-26752. [DOI: 10.1039/d0cp05204c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AuH2 is not as simple as it may seem at first glance!
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Affiliation(s)
- Diego Sorbelli
- Department of Chemistry
- Biology and Biotechnology
- University of Perugia
- 06123 Perugia
- Italy
| | - Paola Belanzoni
- Department of Chemistry
- Biology and Biotechnology
- University of Perugia
- 06123 Perugia
- Italy
| | - Trond Saue
- Laboratoire de Chimie et Physique Quantiques
- UMR 5626 CNRS – Université Toulouse III-Paul Sabatier
- F-31062 Toulouse
- France
| | - Leonardo Belpassi
- Institute of Chemical Science and Technologies “Giulio Natta” (CNR-SCITEC) c/o Department of Chemistry
- Biology and Biotechnology
- University of Perugia
- 06123 Perugia
- Italy
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16
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Mirzayev N, Pavlova Marinova A, Marinov Marinov G, Mammadov K, Karandashev V, Rakhimov A, Baimukhanova A, Vesselinov Karaivanov D, Filosofov DV. Distribution Coefficients of 60 Elements on Cation and Anion-Exchange Resin in Ammonium Chloride Solutions. SOLVENT EXTRACTION AND ION EXCHANGE 2019. [DOI: 10.1080/07366299.2019.1679458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Nijat Mirzayev
- Department of Radiochemistry, Joint Institute for Nuclear Research, DLNP, Dubna, Russian Federation
- Laboratory of Radiochemistry, Institute of Radiation Problems of Azerbaijan National Academy of Sciences, Baku, Azerbaijan
| | | | - Genko Marinov Marinov
- Department of Radiochemistry, Joint Institute for Nuclear Research, DLNP, Dubna, Russian Federation
| | - Khagani Mammadov
- Laboratory of Radiochemistry, Institute of Radiation Problems of Azerbaijan National Academy of Sciences, Baku, Azerbaijan
| | - Vasili Karandashev
- Laboratory of Nuclear physics and Mass spectral methods of analysis, Institute of Microelectronics Technology and High-Purity Materials RAS, Chernogolovka, Russia
| | - Alimardon Rakhimov
- Department of Radiochemistry, Joint Institute for Nuclear Research, DLNP, Dubna, Russian Federation
| | - Aygoz Baimukhanova
- Department of Radiochemistry, Joint Institute for Nuclear Research, DLNP, Dubna, Russian Federation
- Scientific technical center of radiochemistry and isotope production, Institute of Nuclear Physics, Almaty, Kazakhstan
| | - Dimitar Vesselinov Karaivanov
- Department of Radiochemistry, Joint Institute for Nuclear Research, DLNP, Dubna, Russian Federation
- Laboratory of Nuclear Electronics and Mössbauer Spectroscopy, Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
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17
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Kong XH, Wu QY, Lan JH, Wang CZ, Chai ZF, Nie CM, Shi WQ. Theoretical Insights into Preorganized Pyridylpyrazole-Based Ligands toward the Separation of Am(III)/Eu(III). Inorg Chem 2018; 57:14810-14820. [DOI: 10.1021/acs.inorgchem.8b02550] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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 Resource and Environment and Safety 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
| | - 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
| | - Zhi-Fang Chai
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- Engineering Laboratory of Nuclear Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China
| | - Chang-Ming Nie
- School of Resource and Environment and Safety 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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Tatosian IJ, Iacovino AC, Van Stipdonk MJ. Collision-induced dissociation of [U VI O 2 (ClO 4 )] + revisited: Production of [U VI O 2 (Cl)] + and subsequent hydrolysis to create [U VI O 2 (OH)] . RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:1085-1091. [PMID: 29645301 DOI: 10.1002/rcm.8135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE In a previous study [Rapid Commun Mass Spectrom. 2004;18:3028-3034], collision-induced dissociation (CID) of [UVI O2 (ClO4 )]+ appeared to be influenced by the high levels of background H2 O in a quadrupole ion trap. The CID of the same species was re-examined here with the goal of determining whether additional, previously obscured dissociation pathways would be revealed under conditions in which the level of background H2 O was lower. METHODS Water- and methanol-coordinated [UVI O2 (ClO4 )]+ precursor ions were generated by electrospray ionization. Multiple-stage tandem mass spectrometry (MSn ) for CID and ion-molecule reaction (IMR) studies was performed using a linear ion trap mass spectrometer. RESULTS Under conditions of low background H2 O, CID of [UVI O2 (ClO4 )]+ generates [UVI O2 (Cl)]+ , presumably by elimination of two O2 molecules. Using low isolation/reaction times, we found that [UVI O2 (Cl)]+ will undergo an IMR with H2 O to generate [UVI O2 (OH)]+ . CONCLUSIONS With lower levels of background H2 O, CID experiments reveal that the intrinsic dissociation pathway for [UVI O2 (ClO4 )]+ leads to [UVI O2 (Cl)]+ , apparently by loss of two O2 molecules. We propose that the results reported in the earlier CID study reflected a two-step process: initial formation of [UVI O2 (Cl)]+ by CID, followed by a very rapid hydrolysis reaction to leave [UVI O2 (OH)]+ .
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Affiliation(s)
- Irena J Tatosian
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA
| | - Anna C Iacovino
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA
| | - Michael J Van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA
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19
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Van Stipdonk MJ, Iacovino A, Tatosian I. Influence of Background H 2O on the Collision-Induced Dissociation Products Generated from [UO 2NO 3]<sup/>. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:1416-1424. [PMID: 29654536 DOI: 10.1007/s13361-018-1947-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 03/18/2018] [Accepted: 03/18/2018] [Indexed: 06/08/2023]
Abstract
Developing a comprehensive understanding of the reactivity of uranium-containing species remains an important goal in areas ranging from the development of nuclear fuel processing methods to studies of the migration and fate of the element in the environment. Electrospray ionization (ESI) is an effective way to generate gas-phase complexes containing uranium for subsequent studies of intrinsic structure and reactivity. Recent experiments by our group have demonstrated that the relatively low levels of residual H2O in a 2-D, linear ion trap (LIT) make it possible to examine fragmentation pathways and reactions not observed in earlier studies conducted with 3-D ion traps (Van Stipdonk et al. J. Am. Soc. Mass Spectrom. 14, 1205-1214, 2003). In the present study, we revisited the dissociation of complexes composed of uranyl nitrate cation [UVIO2(NO3)]+ coordinated by alcohol ligands (methanol and ethanol) using the 2-D LIT. With relatively low levels of background H2O, collision-induced dissociation (CID) of [UVIO2(NO3)]+ primarily creates [UO2(O2)]+ by the ejection of NO. However, CID (using He as collision gas) of [UVIO2(NO3)]+ creates [UO2(H2O)]+ and UO2+ when the 2-D LIT is used with higher levels of background H2O. Based on the results presented here, we propose that product ion spectrum in the previous experiments was the result of a two-step process: initial formation of [UVIO2(O2)]+ followed by rapid exchange of O2 for H2O by ion-molecule reaction. Our experiments illustrate the impact of residual H2O in ion trap instruments on the product ions generated by CID and provide a more accurate description of the intrinsic dissociation pathway for [UVIO2(NO3)]+. Graphical Abstract ᅟ.
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Affiliation(s)
- Michael J Van Stipdonk
- Department of Chemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA.
| | - Anna Iacovino
- Department of Chemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA
| | - Irena Tatosian
- Department of Chemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA
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20
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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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21
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Hu SX, Liu JJ, Gibson JK, Li J. Periodic Trends in Actinyl Thio-Crown Ether Complexes. Inorg Chem 2018; 57:2899-2907. [DOI: 10.1021/acs.inorgchem.7b03277] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shu-Xian Hu
- Beijing Computational Science Research Center, Beijing 100193, China
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Jing-Jing Liu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - John K. Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
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22
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Wu QY, Song YT, Ji L, Wang CZ, Chai ZF, Shi WQ. Theoretically unraveling the separation of Am(iii)/Eu(iii): insights from mixed N,O-donor ligands with variations of central heterocyclic moieties. Phys Chem Chem Phys 2018; 19:26969-26979. [PMID: 28956572 DOI: 10.1039/c7cp04625a] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the fast development of nuclear energy, the issue related to spent nuclear fuel reprocessing has been regarded as an imperative task, especially for the separation of minor actinides. In fact, it still remains a worldwide challenge to separate trivalent An(iii) from Ln(iii) because of their similar chemical properties. Therefore, understanding the origin of extractant selectivity for the separation of An(iii)/Ln(iii) by using theoretical methods is quite necessary. In this work, three ligands with similar structures but different bridging frameworks, Et-Tol-DAPhen (La), Et-Tol-BPyDA (Lb) and Et-Tol-PyDA (Lc), have been investigated and compared using relativistic density functional theory. The electrostatic potential and molecular orbitals of the ligands indicate that ligand La is a better electron donor compared to ligands Lb and Lc. The results of QTAIM, NOCV and NBO suggest that the Am-N bonds in the studied complexes have more covalent character compared to the Eu-N bonds. Based on the thermodynamic analysis, [M(NO3)(H2O)8]2+ + L + 2NO3- = [ML(NO3)3] + 8H2O should be the most probable reaction in the solvent extraction system. Our results clearly verify that the relatively harder oxygen atoms offer these ligands higher coordination affinities toward both of the An(iii) and Ln(iii) ions compared to the relatively softer nitrogen atoms. However, the latter possess stronger affinities toward An(iii) over Ln(iii), which partly results in the selectivity of these ligands. This work can afford useful information on achieving efficient An(iii)/Ln(iii) separation through tuning the structural rigidity and hardness or softness of the functional moieties of the ligands.
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Affiliation(s)
- 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.
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23
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Sun WG, Wang JJ, Lu C, Xia XX, Kuang XY, Hermann A. Evolution of the Structural and Electronic Properties of Medium-Sized Sodium Clusters: A Honeycomb-Like Na 20 Cluster. Inorg Chem 2017; 56:1241-1248. [PMID: 28105808 DOI: 10.1021/acs.inorgchem.6b02340] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sodium is one of the best examples of a free-electron-like metal and of a certain technological interest. However, an unambiguous determination of the structural evolution of sodium clusters is challenging. Here, we performed an unbiased structure search among neutral and anionic sodium clusters in the medium size range of 10-25 atoms, using the Crystal structure AnaLYsis by Particle Swarm Optimization (CALYPSO) method. Geometries are determined by CALYPSO structure searches, followed by reoptimization of a large number of candidate structures. For most cluster sizes the simulated photoelectron spectra of the lowest-energy structures are in excellent agreement with the experimental data, indicating that the current ground-state structures are the true minima. The equilibrium geometries show that, for both neutral and anionic species, the structural evolution from bilayer structures to layered outsides with interior atoms occurs at n = 16. A novel unprecedented honeycomb-like structure of Na20 cluster with C3 symmetry is uncovered, which is more stable than the prior suggested structure based on pentagonal structural motifs.
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Affiliation(s)
- Wei Guo Sun
- Institute of Atomic and Molecular Physics, Sichuan University , Chengdu 610065, China.,Department of Physics, Nanyang Normal University , Nanyang 473061, China
| | - Jing Jing Wang
- Institute of Atomic and Molecular Physics, Sichuan University , Chengdu 610065, China.,Education College of Information Technology, Hubei Nomal University , Huangshi 435002, China
| | - Cheng Lu
- Department of Physics, Nanyang Normal University , Nanyang 473061, China.,Department of Physics and High Pressure Science and Engineering Center, University of Nevada , Las Vegas, Nevada 89154, United States
| | - Xin Xin Xia
- Institute of Atomic and Molecular Physics, Sichuan University , Chengdu 610065, China
| | - Xiao Yu Kuang
- Institute of Atomic and Molecular Physics, Sichuan University , Chengdu 610065, China
| | - Andreas Hermann
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh , Edinburgh EH9 3JZ, United Kingdom
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24
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Hu SX, Li WL, Dong L, Gibson JK, Li J. Crown ether complexes of actinyls: a computational assessment of AnO2(15-crown-5)2+ (An = U, Np, Pu, Am, Cm). Dalton Trans 2017; 46:12354-12363. [DOI: 10.1039/c7dt02825c] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computational characterization of AnO22+–(15-crown-5) complexes (An = U, Np, Pu, Am, and Cm) reveals actinyl insertion coordination to crown ether.
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Affiliation(s)
- Shu-Xian Hu
- Beijing Computational Science Research Center
- Beijing 100193
- China
| | - Wan-Lu Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Tsinghua University
- Beijing 100084
- China
| | - Liang Dong
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Sichuan 621900
- China
| | - John K. Gibson
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Tsinghua University
- Beijing 100084
- China
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25
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Perez E, Hanley C, Koehler S, Pestok J, Polonsky N, Van Stipdonk M. Gas Phase Reactions of Ions Derived from Anionic Uranyl Formate and Uranyl Acetate Complexes. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:1989-1998. [PMID: 27604237 DOI: 10.1007/s13361-016-1481-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 08/06/2016] [Accepted: 08/08/2016] [Indexed: 05/18/2023]
Abstract
The speciation and reactivity of uranium are topics of sustained interest because of their importance to the development of nuclear fuel processing methods, and a more complete understanding of the factors that govern the mobility and fate of the element in the environment. Tandem mass spectrometry can be used to examine the intrinsic reactivity (i.e., free from influence of solvent and other condensed phase effects) of a wide range of metal ion complexes in a species-specific fashion. Here, electrospray ionization, collision-induced dissociation, and gas-phase ion-molecule reactions were used to create and characterize ions derived from precursors composed of uranyl cation (UVIO22+) coordinated by formate or acetate ligands. Anionic complexes containing UVIO22+ and formate ligands fragment by decarboxylation and elimination of CH2=O, ultimately to produce an oxo-hydride species [UVIO2(O)(H)]-. Cationic species ultimately dissociate to make [UVIO2(OH)]+. Anionic complexes containing acetate ligands exhibit an initial loss of acetyloxyl radical, CH3CO2•, with associated reduction of uranyl to UVO2+. Subsequent CID steps cause elimination of CO2 and CH4, ultimately to produce [UVO2(O)]-. Loss of CH4 occurs by an intra-complex H+ transfer process that leaves UVO2+ coordinated by acetate and acetate enolate ligands. A subsequent dissociation step causes elimination of CH2=C=O to leave [UVO2(O)]-. Elimination of CH4 is also observed as a result of hydrolysis caused by ion-molecule reaction with H2O. The reactions of other anionic species with gas-phase H2O create hydroxyl products, presumably through the elimination of H2. Graphical Abstract ᅟ.
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Affiliation(s)
- Evan Perez
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA
| | - Cassandra Hanley
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA
| | - Stephen Koehler
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA
| | - Jordan Pestok
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA
- Sto-Rox High School, McKees Rocks, PA, 15136, USA
| | - Nevo Polonsky
- Chemistry Department, Bates College, Lewiston, Maine, 04240, USA
| | - Michael Van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Ave., Pittsburgh, PA, 15282, USA.
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26
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Van Stipdonk MJ, Hanley C, Perez E, Pestok J, Mihm P, Corcovilos TA. Collision-induced dissociation of uranyl-methoxide and uranyl-ethoxide cations: Formation of UO2 H(+) and uranyl-alkyl product ions. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30:1879-1890. [PMID: 27392274 DOI: 10.1002/rcm.7668] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/16/2016] [Accepted: 06/16/2016] [Indexed: 06/06/2023]
Abstract
RATIONALE The lower levels of adventitious H2 O in a linear ion trap allow the fragmentation reactions of [UO2 OCH3 ](+) and [UO2 OCH2 CH3 ](+) to be examined in detail. METHODS Methanol- and ethanol-coordinated UO2 (2+) -alkoxide precursors were generated by electrospray ionization (ESI). Multiple-stage tandem mass spectrometry (MS(n) ) and collision-induced dissociation (CID) were performed using a linear ion trap mass spectrometer. RESULTS CID of [UO2 OCH3 (CH3 OH)n ](+) and [UO2 OCH2 CH3 (CH3 CH2 OH)n ](+) , n = 3 and 2, causes loss of neutral alcohol ligands, leading ultimately to bare uranyl-alkoxide species. Comparison of 'native' to deuterium-labeled precursors reveals dissociation pathways not previously observed in 3-D ion trap experiments. CONCLUSIONS UO2 H(+) is generated from [UO2 OCH3 ](+) by transfer of H from the methyl group. Variable-energy and variable-time CID experiments suggest that the apparent threshold for production of UO2 H(+) is lower than for UO2 (+) , but the pathway is kinetically less favored for the former than for the latter. CID experiments reveal that [UO2 OCH2 CH3 ](+) dissociates to generate [UO2 CH3 ](+) , a relatively rare species with a U-C bond, and [UO2 (O = CH2 )](+) .
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Affiliation(s)
- Michael J Van Stipdonk
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA, 15282, USA
| | - Cassandra Hanley
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA, 15282, USA
| | - Evan Perez
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA, 15282, USA
| | - Jordan Pestok
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA, 15282, USA
| | - Patricia Mihm
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA, 15282, USA
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27
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Su J, Li WL, Lopez GV, Jian T, Cao GJ, Li WL, Schwarz WHE, Wang LS, Li J. Probing the Electronic Structure and Chemical Bonding of Mono-Uranium Oxides with Different Oxidation States: UOx(-) and UOx (x = 3-5). J Phys Chem A 2016; 120:1084-96. [PMID: 26825216 DOI: 10.1021/acs.jpca.5b11354] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Uranium oxide clusters UOx(-) (x = 3-5) were produced by laser vaporization and characterized by photoelectron spectroscopy and quantum theory. Photoelectron spectra were obtained for UOx(-) at various photon energies with well-resolved detachment transitions and vibrational resolution for x = 3 and 4. The electron affinities of UOx were measured as 1.12, 3.60, and 4.02 eV for x = 3, 4, and 5, respectively. The geometric and electronic structures of both the anions and the corresponding neutrals were investigated by quasi-relativistic electron-correlation quantum theory to interpret the photoelectron spectra and to provide insight into their chemical bonding. For UOx clusters with x ≤ 3, the O atoms appear as divalent closed-shell anions around the U atom, which is in various oxidation states from U(II)(fds)(4) in UO to U(VI)(fds)(0) in UO3. For x > 3, there are no longer sufficient valence electrons from the U atom to fill the O(2p) shell, resulting in fractionally charged and multicenter delocalized valence states for the O ligands as well as η(1)- or η(2)-bonded O2 units, with unusual spin couplings and complicated electron correlations in the unfilled poly oxo shell. The present work expands our understanding of both the bonding capacities of actinide elements with extended spdf valence shells as well as the multitude of oxygen's charge and bonding states.
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Affiliation(s)
- Jing Su
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Tsinghua University , Beijing 100084, China.,Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201800, China
| | - Wei-Li Li
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Gary V Lopez
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Tian Jian
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Guo-Jin Cao
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Tsinghua University , Beijing 100084, China
| | - Wan-Lu Li
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Tsinghua University , Beijing 100084, China
| | - W H Eugen Schwarz
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Tsinghua University , Beijing 100084, China.,Physical and Theoretical Chemistry, University of Siegen , Siegen 57068, Germany
| | - Lai-Sheng Wang
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Jun Li
- Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Tsinghua University , Beijing 100084, China
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28
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Li WL, Li Y, Xu CQ, Wang XB, Vorpagel E, Li J. Periodicity, Electronic Structures, and Bonding of Gold Tetrahalides [AuX4]− (X = F, Cl, Br, I, At, Uus). Inorg Chem 2015; 54:11157-67. [DOI: 10.1021/acs.inorgchem.5b01489] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wan-Lu Li
- Department of Chemistry and Laboratory of Organic Optoelectronics
and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Yong Li
- Department of Chemistry and Laboratory of Organic Optoelectronics
and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Cong-Qiao Xu
- Department of Chemistry and Laboratory of Organic Optoelectronics
and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | | | | | - Jun Li
- Department of Chemistry and Laboratory of Organic Optoelectronics
and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
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29
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Piecuch P, Hansen JA, Ajala AO. Benchmarking the completely renormalised equation-of-motion coupled-cluster approaches for vertical excitation energies. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1076901] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Dau PD, Carretas JM, Marçalo J, Lukens WW, Gibson JK. Oxidation of Actinyl(V) Complexes by the Addition of Nitrogen Dioxide Is Revealed via the Replacement of Acetate by Nitrite. Inorg Chem 2015; 54:8755-60. [DOI: 10.1021/acs.inorgchem.5b01385] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Phuong D. Dau
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - 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
| | - Wayne W. Lukens
- 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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31
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32
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Su J, Dau PD, Liu HT, Huang DL, Wei F, Schwarz WHE, Li J, Wang LS. Photoelectron spectroscopy and theoretical studies of gaseous uranium hexachlorides in different oxidation states: UCl6q− (q = 0–2). J Chem Phys 2015; 142:134308. [DOI: 10.1063/1.4916399] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Jing Su
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Phuong D. Dau
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Hong-Tao Liu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Dao-Ling Huang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Fan Wei
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | - W. H. E. Schwarz
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Lai-Sheng Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
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33
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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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34
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Dau PD, Gibson JK. Halide Abstraction from Halogenated Acetate Ligands by Actinyls: A Competition between Bond Breaking and Bond Making. J Phys Chem A 2015; 119:3218-24. [DOI: 10.1021/acs.jpca.5b00952] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Phuong D. Dau
- 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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35
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Lv CM, Wang YM, Bai FQ, Zhang HX, Pan QJ. Tuning electronic structures of uranyl fluorides via increasing equatorial pyridyl number and extending pyridyl conjugation. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2014.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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The synthesis and spectroscopic characterization of an aromatic uranium amidoxime complex. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Van Stipdonk MJ, Michelini MDC, Plaviak A, Martin D, Gibson JK. Formation of Bare UO22+ and NUO+ by Fragmentation of Gas-Phase Uranyl–Acetonitrile Complexes. J Phys Chem A 2014; 118:7838-46. [DOI: 10.1021/jp5066067] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael J. Van Stipdonk
- Department
of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282, United States
| | | | - Alexandra Plaviak
- Department
of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282, United States
| | - Dean Martin
- Department
of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282, United States
| | - John K. Gibson
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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38
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Su J, Wang Z, Pan D, Li J. Excited States and Luminescent Properties of UO2F2 and Its Solvated Complexes in Aqueous Solution. Inorg Chem 2014; 53:7340-50. [DOI: 10.1021/ic5006852] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jing Su
- Division
of Nuclear Materials Science and Engineering, Shanghai Institute of
Applied Physics, and Key Laboratory of Nuclear Radiation and Nuclear
Energy Technology, Chinese Academy of Sciences, Shanghai 201800, China
- Department
of Chemistry and Laboratory of Organic Optoelectronics and Molecular
Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Zheming Wang
- William
R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, P. O. Box 999, Richland, Washington 99352, United States
| | - Duoqiang Pan
- William
R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, P. O. Box 999, Richland, Washington 99352, United States
- Radiochemistry
Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Jun Li
- William
R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, P. O. Box 999, Richland, Washington 99352, United States
- Department
of Chemistry and Laboratory of Organic Optoelectronics and Molecular
Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China
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39
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Structural/electronic properties and reaction energies of a series of mono- and bis-uranyl dihalides equatorially coordinated by N/O ligands. J Mol Model 2014; 20:2305. [PMID: 24869781 DOI: 10.1007/s00894-014-2305-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 05/12/2014] [Indexed: 10/25/2022]
Abstract
Monometallic (UO2)(X)2(L)3 (L = pyridine (py), X = F (1), Cl (2), Br (3) and I (4); L = tetrahydrofuran (thf), X = Cl (5); L = pyrrole (pl), X = Cl (6)) as well as bimetallic [(UO2)(μ2-X)(X)(L)2]2 (L = py, X = F (7), Cl (8), Br (9) and I (10); L = thf, X = Cl (11); L = pl, X = Cl (12); μ 2 = doubly bridged) were examined using relativistic density functional theory. With changing from F, Cl, Br to I irregardless of in mono- or bis-uranyl complexes, bond lengths of U = O were calculated to be decreasing, resulting from strengthening of axial U = O bonds while weakening equatorial X → U coordination. This is further evidenced by calculated bond orders of U = O and stretching vibrational frequencies. A similar situation was is found in 2, 5 and 6 as well as in 8, 11 and 12, where N/O ligands are varied but the chlorine atoms are retained. The present study reveals that all these complexes have U(f)-character low-lying unoccupied orbitals, and their π*(U = O) antibonds are located on higher-energy orbitals. Complex 1 was calculated to show σ(U = O) bonding character for HOMO, and pyridine-character for other occupied orbitals; the fluorine ligand occurs in a relatively low-energy region. In contrast, the π(p) characters of heavier halogen atoms significantly contribute to most frontier molecular orbitals of 2, 3 and 4. Unlike this electronic feature of 2, complexes 5 and 6 exhibit mainly thf and pyrrole characters, respectively, for their high-lying occupied orbitals. Electronic structures of bisuranyl complexes 7-12, albeit a little more complicated, are revealed to be similar to those of the corresponding monouranyl complexes. Finally, energies of formation reactions of the above complexes were calculated and compared with available experimental results.
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40
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Yu HZ, Li C, Chen BH, Yang CT, Wang D, Fu Y, Hu S, Dang Z. Promising density functional theory methods for predicting the structures of uranyl complexes. RSC Adv 2014. [DOI: 10.1039/c4ra08264h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
By examining the overall accuracy of different theoretical methods in predicting the U–X bond distances (of a series uranyl complexes), we found that both the global-hybrid meta-GGA functional of BB1K and the range-seperated LC-BLYP functional are fairly good (even better than the popular B3LYP method).
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Affiliation(s)
- Hai-Zhu Yu
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
| | - Can Li
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
| | - Bai-Hua Chen
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang, China
| | - Chu-Ting Yang
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang, China
| | - Dongrui Wang
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
| | - Yao Fu
- Department of Chemistry
- University of Science and Technology of China
- Hefei 230026, China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry
- CAEP
- Mianyang, China
| | - Zhimin Dang
- Department of Polymer Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083, China
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41
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Hollóczki O. Uranyl(VI) Complexes in and from Imidazolium Acetate Ionic Liquids: Carbenes versus Acetates? Inorg Chem 2013; 53:835-46. [DOI: 10.1021/ic402921b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Oldamur Hollóczki
- Mulliken
Center for Theoretical Chemistry, University of Bonn, Beringstrasse
4 + 6, D-53115 Bonn, Germany
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42
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Li WL, Hu HS, Jian T, Lopez GV, Su J, Li J, Wang LS. Probing the electronic structures of low oxidation-state uranium fluoride molecules UFx− (x = 2−4). J Chem Phys 2013; 139:244303. [DOI: 10.1063/1.4851475] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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43
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Xu C, Su J, Xu X, Li J. Theoretical studies on the complexation of uranyl with typical carboxylate and amidoximate ligands. Sci China Chem 2013. [DOI: 10.1007/s11426-013-4994-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Su J, Dau PD, Xu CF, Huang DL, Liu HT, Wei F, Wang LS, Li J. A Joint Photoelectron Spectroscopy and Theoretical Study on the Electronic Structure of UCl5−and UCl5. Chem Asian J 2013; 8:2489-96. [DOI: 10.1002/asia.201300627] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Indexed: 11/11/2022]
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45
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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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