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Sun E, Shan S, Miao Q, Xu H, Yan B. Theoretical Study on the Spectroscopic Properties and Photodissociation Mechanism of Dibromocarbene. J Phys Chem A 2023; 127:7411-7418. [PMID: 37651623 DOI: 10.1021/acs.jpca.3c02075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Detailed calculations on the electronic states of dibromocarbene (CBr2) herein are presented. First, the spectroscopic properties of the electronic states including geometry parameters, harmonic vibrational frequencies and transition energies of the lowest electronic states of the neutral radical were calculated in detail using the internally contracted multireference configuration interaction methods including Davidson correction (icMRCI+Q) with correlation consistent basis sets of aug-cc-pVXZ (X = T, Q, 5). Second, as CBr2 including two Br atoms, the Spin-Orbit Coupling (SOC) effect on the spectroscopic parameters and the one-dimensional cuts of the potential energy surface (PESs) of the lowest three states were studied. The barrier to linearity and dissociation of the singlet state were discussed. Third, the one-dimensional cuts along with the vertical transition energy (VTE), the oscillator strength, and so on of the electronic states related to the several lowest dissociation limits of CBr2 were calculated at the icMRCI+Q/aug-cc-pVTZ level. Based on the computed results of the electronic states of the radical, the photodissociation mechanism in the UV region were discussed in detail. The ab initio calculations are compared with the previous theoretical and experimental data and are in good agreement. The present work will provide a comprehensive understanding on the electronic structures and dissociation dynamics for the electronic states of the CBr2 radical.
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Affiliation(s)
- Erping Sun
- College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shimin Shan
- School of Semiconductors and Physics, North University of China, Taiyuan 030051, China
| | - Quan Miao
- College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Haifeng Xu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bing Yan
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
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2
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Shan S, Sun E, Gao Y, Li Z, Xu H, Yan B. An ab initio study on the electronic excited states and photodissociation mechanism of bromocarbene molecule. Phys Chem Chem Phys 2023. [PMID: 37305951 DOI: 10.1039/d3cp00985h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We used the internally contracted explicitly correlated multireference configuration interaction (icMRCI-F12) method combined with Davidson correction to conduct a high-precision ab initio study of CHBr. The spin-orbit coupling (SOC) is incorporated into the calculation. The 21 spin-free states split into 53 spin-coupled states of CHBr. The vertical transition energies and oscillator strengths are obtained of these states. The SOC effect on the equilibrium structures and the harmonic vibrational frequencies of the ground state X1A', the lowest triplet state a3A'' and the first excited singlet state A1A'' is investigated. The results reveal a significant effect of the SOC on the bond angle and the frequency of the bending mode of a3A''. The potential energy curves of electronic states of CHBr as functions of the H-C-Br bond angle, C-H bond length, and C-Br bond length, respectively, are also investigated. Based on the calculated results, the interactions between electronic states and photodissociation mechanism involved in CHBr in the ultraviolet region are explored. Our theoretical studies will shed light on the complicated interactions and dynamics of the electronic states of bromocarbenes.
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Affiliation(s)
- Shimin Shan
- School of Semiconductors and Physics, North University of China, Taiyuan 030051, China
| | - ErPing Sun
- College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yongquan Gao
- School of Semiconductors and Physics, North University of China, Taiyuan 030051, China
| | - Zirun Li
- School of Semiconductors and Physics, North University of China, Taiyuan 030051, China
| | - Haifeng Xu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Bing Yan
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
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3
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Theoretical prediction of noble gas inserted halocarbenes: FNgCX (Ng = Kr, and Xe; X = F, Cl, Br, and I). Chem Phys 2017. [DOI: 10.1016/j.chemphys.2017.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shan S, Yan P, Zhang X, Yin S, Yuan X, Xu H, Yan B. Exploring the structure and photodissociation mechanism of the electronic states of iodocarbene, CHI: a theoretical contribution. Phys Chem Chem Phys 2017; 19:17735-17744. [DOI: 10.1039/c7cp02575k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Interactions between the electronic states of CHI were investigated and the dissociation mechanism was explored in the ultraviolet region.
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Affiliation(s)
- Shimin Shan
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Peiyuan Yan
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Xiaomei Zhang
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Shuang Yin
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Xiang Yuan
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Haifeng Xu
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Bing Yan
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
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Sun E, Ren T, Shan S, Liu Q, Xu H, Yan B. Multireference configuration interaction study of dichlorocarbene. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.07.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Nyambo S, Karshenas C, Reid SA, Lolur P, Dawes R. Towards a global model of spin-orbit coupling in the halocarbenes. J Chem Phys 2015; 142:214304. [DOI: 10.1063/1.4921466] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Silver Nyambo
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Cyrus Karshenas
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Scott A. Reid
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Phalgun Lolur
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - Richard Dawes
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
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Bacskay GB. Spectroscopy and heats of formation of CXI (X = Br, Cl, F) iodocarbenes: quantum chemical characterisation of the X̃(1 A′), ã(3 A″) and Ã(1 A″) states. Mol Phys 2015. [DOI: 10.1080/00268976.2014.1000991] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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McDonald KJ, Quandt RW. Ground state surface formation of Cl2 in the dissociation of CCl4 and CHCl3 and comparisons with Br species. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.03.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sun E, Lv H, Shi D, Wei C, Xu H, Yan B. All-Electron Relativistic Multireference Configuration Interaction Investigation of Fluoroiodo Carbene. J Phys Chem A 2014; 118:2447-52. [DOI: 10.1021/jp411967r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erping Sun
- Institute of Atomic and Molecular
Physics, Jilin University, Changchun 130012, China
| | - Hang Lv
- Institute of Atomic and Molecular
Physics, Jilin University, Changchun 130012, China
| | - Dandan Shi
- Institute of Atomic and Molecular
Physics, Jilin University, Changchun 130012, China
| | - Changli Wei
- Institute of Atomic and Molecular
Physics, Jilin University, Changchun 130012, China
| | - Haifeng Xu
- Institute of Atomic and Molecular
Physics, Jilin University, Changchun 130012, China
| | - Bing Yan
- Institute of Atomic and Molecular
Physics, Jilin University, Changchun 130012, China
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Rivero P, Jiménez-Hoyos CA, Scuseria GE. Predicting Singlet–Triplet Energy Splittings with Projected Hartree–Fock Methods. J Phys Chem A 2013; 117:8073-80. [DOI: 10.1021/jp405755z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pablo Rivero
- Department of Chemistry, Rice University, Houston, Texas 77005-1892, United
States
| | | | - Gustavo E. Scuseria
- Department of Chemistry, Rice University, Houston, Texas 77005-1892, United
States
- Department of Physics
and Astronomy, Rice University, Houston,
Texas 77005-1892, United
States
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11
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Sun E, Li R, Sun Q, Wei C, Xu H, Yan B. An ab Initio Investigation of Fluorobromo Carbene. J Phys Chem A 2012; 116:10435-40. [DOI: 10.1021/jp307921p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Erping Sun
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Rui Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Qixiang Sun
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Changli Wei
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Haifeng Xu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bing Yan
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
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12
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Characteristics and nature of the intermolecular interactions in boron-bonded complexes with carbene as electron donor: an ab initio, SAPT and QTAIM study. J Mol Model 2011; 18:2003-11. [PMID: 21877151 DOI: 10.1007/s00894-011-1221-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 08/10/2011] [Indexed: 10/17/2022]
Abstract
We report geometries, stabilization energies, symmetry adapted perturbation theory (SAPT) and quantum theory of atoms in molecules (QTAIM) analyses of a series of carbene-BX(3) complexes, where X = H, OH, NH(2), CH(3), CN, NC, F, Cl, and Br. The stabilization energies were calculated at HF, B3LYP, MP2, MP4 and CCSD(T)/aug-cc-pVDZ levels of theory using optimized geometries of all the complexes obtained from B3LYP/aug-cc-pVTZ. Quantitatively, all the complexes indicate the presence of B-C(carbene) interaction due to the short B-C(carbene) distances. Inspection of stabilization energies reveals that the interaction energies increase in the order NH(2) > OH > CH(3) > F > H > Cl > Br > NC > CN, which is the opposite trend shown in the binding distances. Considering the SAPT results, it is found that electrostatic effects account for about 50% of the overall attraction of the studied complexes. By comparison, the induction components of these interactions represent about 40% of the total attractive forces. Despite falling in a region of charge depletion with nabla(2)ρ(BCP) >0, the B-C(carbene) bond critical points (BCPs) are characterized by a reasonably large value of the electron density (ρ(BCP)) and H(BCP) <0, indicating that the potential energy overcomes the kinetic energy density at BCP and the B-C(carbene) bond is a polar covalent bond.
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