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Lu Y, Wang Z, Wang F. Intermediate Hamiltonian Fock-space coupled-cluster theory for excitation energies, double ionization potentials, and double electron attachments with spin–orbit coupling. J Chem Phys 2022; 156:114111. [DOI: 10.1063/5.0076462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The intermediate Hamiltonian Fock-space coupled-cluster methods at the singles and doubles level (IHFSCCSD) for excitation energies in the (1p, 1h) sector, double ionization potentials in the (0p, 2h) sector, and double electron attachments in the (2p, 0h) sector of the Fock space are implemented based on the CCSD method with spin–orbit coupling (SOC) included in the post-Hartree–Fock treatment using a closed-shell reference in this work. The active space is chosen to contain those orbitals that have the largest contribution to principal ionized or electron-attached states obtained from the equation-of-motion coupled-cluster calculations. Both time-reversal symmetry and spatial symmetry are exploited in the implementation. Our results show that the accuracy of IHFSCCSD results is closely related to the active space, and the sufficiency of the active space can be assessed from the percentage of transitions within the active space. In addition, unreasonable results may be encountered when the ionized or electron-attached states with a somewhat larger contribution from double excitations are included to determine the active space and cluster operators in the (0p, 1h) or (1p, 0h) sector of the Fock space. A larger active space may be required to describe SO splitting reliably than that in the scalar-relativistic calculations in some cases. The IHFSCCSD method with SOC developed in this work can provide reliable results for heavy-element systems when a sufficient active space built upon the principal ionization potential/electron affinity states is adopted.
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Affiliation(s)
- Yanzhao Lu
- Institute of Atomic and Molecular Physics, Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Zhifan Wang
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu 611130, 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 610065, People’s Republic of China
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Guo M, Wang Z, Wang F. Equation-of-motion coupled-cluster theory for double electron attachment with spin-orbit coupling. J Chem Phys 2020; 153:214118. [PMID: 33291924 DOI: 10.1063/5.0032716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report implementation of the equation-of-motion coupled-cluster (EOM-CC) method for double electron-attachment (DEA) with spin-orbit coupling (SOC) at the CC singles and doubles (CCSD) level using a closed-shell reference in this work. The DEA operator employed in this work contains two-particle and three-particle one-hole excitations, and SOC is included in post-Hartree-Fock treatment. Time-reversal symmetry and spatial symmetry are exploited to reduce computational cost. The EOM-DEA-CCSD method with SOC allows us to investigate SOC effects of systems with two-unpaired electrons. According to our results on atoms, double ionization potentials (DIPs), excitation energies (EEs), and SO splittings of low-lying states are calculated reliably using the EOM-DEA-CCSD method with SOC. Its accuracy is usually higher than that of EOM-CCSD for EEs or DIPs if the same target can be reached from single excitations by choosing a proper closed-shell reference. However, performance of the EOM-DEA-CCSD method with SOC on molecules is not as good as that for atoms. Bond lengths for the ground and the several lowest excited states of GaH, InH, and TlH are underestimated pronouncedly, although reasonable EEs are obtained, and splittings of the 3Σ- state from the π2 configuration are calculated to be too small with EOM-DEA-CCSD.
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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 610065, People's Republic of China
| | - Zhifan Wang
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu 611130, 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 610065, People's Republic of China
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Wang Z, Hu S, Wang F, Guo J. Equation-of-motion coupled-cluster method for doubly ionized states with spin-orbit coupling. J Chem Phys 2015; 142:144109. [DOI: 10.1063/1.4917041] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Zhifan Wang
- College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Shu Hu
- Key Laboratory of Chemical Laser, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Fan Wang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Jingwei Guo
- Key Laboratory of Chemical Laser, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
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Zhu Z, Niu X, Shi D, Sun J. Spin–orbit coupling effects in the ground state and four low-lying excited valence states a1Δ, B3Σ−, 13Δ and 13Σ+ of SeS molecule. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2012.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chattopadhyaya S, Nath A, Das KK. Configuration interaction study of the electronic states and spectroscopic properties of selenium monoxide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 89:160-167. [PMID: 22261104 DOI: 10.1016/j.saa.2011.12.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 12/09/2011] [Accepted: 12/21/2011] [Indexed: 05/31/2023]
Abstract
The electronic spectrum of the selenium monoxide (SeO) molecule has been studied theoretically by using ab initio based multireference singles and doubles configuration interaction (MRDCI) methodology, which includes relativistic effective core potentials (RECP) and suitable Gaussian basis sets of the atoms. Potential energy curves of several electronic states correlating with the lowest and second dissociation limit are constructed. Spectroscopic parameters, namely Te, re, and ωe of 10 bound Λ-S states of the molecule within 4.71 eV are estimated and compared with the available data. In addition, binding energies of the ground and some excited states are computed. The changes in the potential energy curves and spectroscopic properties after the inclusion of the spin-orbit coupling are discussed and also compared with the available data. Transition probabilities of some dipole-allowed and spin forbidden transitions are estimated and radiative lifetimes of some excited states are reported. Dipole moments of some low-lying Λ-S states as a function of bond distance have also been computed.
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Affiliation(s)
- Surya Chattopadhyaya
- Department of Physics, Tripura University, Suryamaninagar 799022 Tripura, India.
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Rota JB, Knecht S, Fleig T, Ganyushin D, Saue T, Neese F, Bolvin H. Zero field splitting of the chalcogen diatomics using relativistic correlated wave-function methods. J Chem Phys 2011; 135:114106. [DOI: 10.1063/1.3636084] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Fink E, Kruse H, Ramsay D, Wang DC. High resolution studies of the b 1Σ+-X 3Σ- emission system of SeS. Mol Phys 2006. [DOI: 10.1080/00268978700100221] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- E.H. Fink
- a Physikalische Chemie-Fachbereich 9 , Bergische Universität-Gesamthochschule Wuppertal , D-5600 , Wuppertal 1 , F.R. Germany
| | - H. Kruse
- a Physikalische Chemie-Fachbereich 9 , Bergische Universität-Gesamthochschule Wuppertal , D-5600 , Wuppertal 1 , F.R. Germany
| | - D.A. Ramsay
- b Herzberg Institute of Astrophysics , Ottawa , Ontario , Canada , K1A 0R6
| | - Ding-Chang Wang
- b Herzberg Institute of Astrophysics , Ottawa , Ontario , Canada , K1A 0R6
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Heinemann C, Koch W, Lindner GG, Reinen D, Widmark PO. Ground- and excited-state properties of neutral and anionic selenium dimers and trimers. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:1979-1993. [PMID: 9913686 DOI: 10.1103/physreva.54.1979] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Bielefeld M, Wildt J, Fink E. Rate constants of the near-resonant E-E energy exchange processes SeS(b0+) + O2(X3Σg−) ⇌ SeS(X10+) + O2(a1Δg). Chem Phys Lett 1986. [DOI: 10.1016/s0009-2614(86)80128-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Coe JV, Snodgrass JT, Freidhoff CB, McHugh KM, Bowen KH. Photoelectron spectroscopy of the negative ion SeO−. J Chem Phys 1986. [DOI: 10.1063/1.450608] [Citation(s) in RCA: 83] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bielefeld M, Elfers G, Fink E, Kruse H, Wildt J, Winter R, Zabel F. O2(a1Δg)-sensitized chemiluminescence of a1Δ → X3Σ− and b1Σ+ → X3Σ− transitions of group VI—group VI and group V—group VII diatomic molecules. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0047-2670(84)87043-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Winter R, Kruse H, Fink E, Wildt J, Zabel F. b1Σ+ Emissions from group V–VII diatomic molecules. b 0+ → X1 0+, X2 1 emissions of AsI and SbI. Chem Phys Lett 1984. [DOI: 10.1016/0009-2614(84)80084-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Winter R, Kruse H, Fink E, Wildt J. b 1Σ+ Emissions from group V–VII diatomic molecules: bO+ → X1 O+ emission of Pl. Chem Phys Lett 1983. [DOI: 10.1016/0009-2614(83)87432-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Winter R, Fink E, Wildt J, Zabel F. b 1Σ+ and a 1Δ emissions from group VI—VI diatomic molecules: b0+ → X10+, X21 emissions of TeSe. Chem Phys Lett 1983. [DOI: 10.1016/0009-2614(83)87100-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kruse H, Winter R, Fink E, Wildt J, Zabel F. b 1Σ+ emissions from group V-VII diatomic molecules: bo+ → X10+, X21 emissions of SbBr. Chem Phys Lett 1982. [DOI: 10.1016/0009-2614(82)83223-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Winter R, Barnes I, Fink E, Wildt J, Zabel F. b1Σ+ and a1Δ emissions from group VI-VI diatomic molecules: b0+ → X10+, x21 emissions of TeO and TeS. J Mol Struct 1982. [DOI: 10.1016/0022-2860(82)87210-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Winter R, Barnes I, Fink E, Wildt J, Zabel F. b1σ+ and a1Δ emissions from group VIVI diatomic molecules bo+g å X21g emissions of Se2 and Te2. Chem Phys Lett 1982. [DOI: 10.1016/0009-2614(82)83252-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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