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Kovács A. Electronic structure and spectroscopic properties of mixed sodium actinide oxides Na2AnO4 (An = U, Np, Pu, Am). J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pogány P, Kovács A, Visscher L, Konings RJM. Theoretical study of actinide monocarbides (ThC, UC, PuC, and AmC). J Chem Phys 2016; 145:244310. [DOI: 10.1063/1.4972812] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Peter Pogány
- European Commission, Joint Research Centre, P.O. Box 2340, 76125 Karlsruhe, Germany
- Spectroscopic Research Department, Gedeon Richter Plc., Gyömrői út 19-21, 1103 Budapest, Hungary
| | - Attila Kovács
- European Commission, Joint Research Centre, P.O. Box 2340, 76125 Karlsruhe, Germany
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, 1111 Budapest, Hungary
| | - Lucas Visscher
- Department of Theoretical Chemistry, Vrije Universiteit Amsterdam, De Boelelaan 1083, NL-1081 HV Amsterdam, The Netherlands
| | - Rudy J. M. Konings
- European Commission, Joint Research Centre, P.O. Box 2340, 76125 Karlsruhe, Germany
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Molpeceres G, Rayón VM, Barrientos C, Largo A. Molecular Structure and Bonding in Plutonium Carbides: A Theoretical Study of PuC3. J Phys Chem A 2016; 120:2232-9. [PMID: 27010701 DOI: 10.1021/acs.jpca.6b00543] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The most relevant species of plutonium tricarbide were characterized using theoretical methods. The global minimum is predicted to be a fan structure where the plutonium atom is bonded to a quasi-linear C3 unit. A rhombic isomer, shown to be a bicyclic species with transannular C-C bonding, lies about 39 kJ/mol above the fan isomer. A linear PuCCC isomer and a three-membered ring CPuC2 isomer were found to be higher in energy (150 and 195 kJ/mol, respectively, above the predicted global minimum). The possible processes for the formation of these species are discussed, and the IR spectra were predicted to help in possible experimental detection. The nature of the Pu-C interaction has been analyzed in terms of a topological analysis of the electronic density, showing that Pu-C bonding is essentially ionic with a certain degree of covalent character.
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Affiliation(s)
- Germán Molpeceres
- Instituto de Estructura de la Materia, IEM-CSIC , Serrano 123, 28006 Madrid, Spain
| | - Víctor M Rayón
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid , Campus Miguel Delibes, Paseo de Belén 7, 47011 Valladolid, Spain
| | - Carmen Barrientos
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid , Campus Miguel Delibes, Paseo de Belén 7, 47011 Valladolid, Spain
| | - Antonio Largo
- Departamento de Química Física y Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid , Campus Miguel Delibes, Paseo de Belén 7, 47011 Valladolid, Spain
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Kovács A, Infante I. Theoretical study of the electronic spectra of neutral and cationic NpO and NpO2. J Chem Phys 2015; 143:074305. [PMID: 26298132 DOI: 10.1063/1.4928588] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The electronic spectra of neutral NpO and NpO2 as well as of their mono- (NpO(+), NpO2(+)) and dications (NpO(2+), NpO2(2+)) were studied using multiconfigurational relativistic quantum chemical calculations at the complete active space self-consistent field/CASPT2 level of theory taking into account spin-orbit coupling. The active space included 16 orbitals: all the 7s, 6d, and 5f orbitals of neptunium together with selected orbitals of oxygen. The vertical excitation energies on the ground state geometries have been computed up to ca. 35,000 cm(-1). The gas-phase electronic spectra were evaluated on the basis of the computed Einstein coefficients at 298 K and 3000 K. The computed vertical transition energies show good agreement with previous condensed-phase results on NpO2(+) and NpO2(2+).
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Affiliation(s)
- Attila Kovács
- European Commission, Joint Research Centre, Institute for Transuranium Elements, P.O. Box 2340, 76125 Karlsruhe, Germany
| | - Ivan Infante
- Department of Theoretical Chemistry, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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Abstract
In this paper, we reported the smallest main-group dicarbide with all deltahedras, which is also the first main-group dicarbide with (n + 1) polyhedral skeletal electron pairs (PSEPs).
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Affiliation(s)
- Jing-jing Sui
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Jing Xu
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Yi-hong Ding
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
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Pogány P, Kovács A, Konings RJM. Theoretical Study of Thorium and Uranium Tetracarbide Molecules. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301425] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Pereira CCL, Maurice R, Lucena AF, Hu S, Gonçalves AP, Marçalo J, Gibson JK, Andrews L, Gagliardi L. Thorium and Uranium Carbide Cluster Cations in the Gas Phase: Similarities and Differences between Thorium and Uranium. Inorg Chem 2013; 52:10968-75. [DOI: 10.1021/ic401058b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Cláudia C. L. Pereira
- Unidade de Ciências
Químicas e Radiofarmacêuticas, IST/ITN,
Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Rémi Maurice
- Department
of Chemistry, Supercomputing Institute and Chemical Theory
Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Ana F. Lucena
- Unidade de Ciências
Químicas e Radiofarmacêuticas, IST/ITN,
Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Shuxian Hu
- Department
of Chemistry, Supercomputing Institute and Chemical Theory
Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - António P. Gonçalves
- Unidade de Ciências
Químicas e Radiofarmacêuticas, IST/ITN,
Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - Joaquim Marçalo
- Unidade de Ciências
Químicas e Radiofarmacêuticas, IST/ITN,
Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém, Portugal
| | - John K. Gibson
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Lester Andrews
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Laura Gagliardi
- Department
of Chemistry, Supercomputing Institute and Chemical Theory
Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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Ponikvar-Svet M, Zeiger DN, Keating LR, Liebman JF. Interplay of thermochemistry and Structural Chemistry, the journal (volume 23, 2012, issues 4–6) and the discipline. Struct Chem 2013. [DOI: 10.1007/s11224-013-0280-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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