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Zanchet A, Roncero O, Karabulut E, Solem N, Romanzin C, Thissen R, Alcaraz C. The role of intersystem crossing in the reactive collision of S+(4S) with H2. J Chem Phys 2024; 161:044302. [PMID: 39037135 DOI: 10.1063/5.0214447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 07/05/2024] [Indexed: 07/23/2024] Open
Abstract
We report a study on the reactive collision of S+(4S) with H2, HD, and D2 combining guided ion beam experiments and quantum-mechanical calculations. It is found that the reactive cross sections reflect the existence of two different mechanisms, one being spin-forbidden. Using different models, we demonstrate that the spin-forbidden pathway follows a complex mechanism involving three electronic states instead of two as previously thought. The good agreement between theory and experiment validates the methodology employed and allows us to fully understand the reaction mechanism. This study also provides new fundamental insights into the intersystem crossing process.
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Affiliation(s)
- Alexandre Zanchet
- Instituto de Física Fundamental, CSIC, Serrano 123, 28006 Madrid, Spain
| | - Octavio Roncero
- Instituto de Física Fundamental, CSIC, Serrano 123, 28006 Madrid, Spain
| | - Ezman Karabulut
- Vocational School of Health Services, Bitlis Eren University, 13000 Bitlis, Turkey
| | - Nicolas Solem
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR8000, 91405 Orsay, France and Synchrotron SOLEIL, L'Orme des Merisiers, 91192 Saint Aubin, Gif-sur-Yvette, France
| | - Claire Romanzin
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR8000, 91405 Orsay, France and Synchrotron SOLEIL, L'Orme des Merisiers, 91192 Saint Aubin, Gif-sur-Yvette, France
| | - Roland Thissen
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR8000, 91405 Orsay, France and Synchrotron SOLEIL, L'Orme des Merisiers, 91192 Saint Aubin, Gif-sur-Yvette, France
| | - Christian Alcaraz
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR8000, 91405 Orsay, France and Synchrotron SOLEIL, L'Orme des Merisiers, 91192 Saint Aubin, Gif-sur-Yvette, France
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Zhang L, Zhao J, Liu D, Wang W, Yue D, Song Y, Meng Q. A new global analytical ab initio potential energy surface for the dynamics of the C +( 2P) + SH(X 2Π) reaction. Phys Chem Chem Phys 2022; 24:1007-1015. [PMID: 34927636 DOI: 10.1039/d1cp04948h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The global potential energy surface (PES) of HCS+(X1Σ+) is constructed using many-body expansion (MBE) methodology. The obtained analytical function is found by fitting the 7907 ab initio energy points computed at the Davidson-corrected multi-reference configuration interaction level with the aug-cc-pV(5+d)Z basis set. The final root mean square error is 0.0419 eV, and the maximum deviation is 0.2039 eV, showing that the analytical formula agrees well with the energy points. The topological features are calculated and discussed based upon the analytical PES of HCS+(X1Σ+). The reaction probability, integral cross sections and other details of the C+(2P) + SH(X2Π) → H(2S) + CS+(X2Σ+) reaction are investigated using the quasi-classical trajectory and time-dependent quantum wave packet methods.
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Affiliation(s)
- Lulu Zhang
- School of Science, Shandong Jiaotong University, 250357, Jinan, China.
| | - Juan Zhao
- School of Science, Shandong Jiaotong University, 250357, Jinan, China.
| | - Dong Liu
- School of Science, Shandong Jiaotong University, 250357, Jinan, China.
| | - Wei Wang
- School of Science, Shandong Jiaotong University, 250357, Jinan, China.
| | - Daguang Yue
- School of Science, Shandong Jiaotong University, 250357, Jinan, China.
| | - Yuzhi Song
- School of Physics and Electronics, Shandong Normal University, 250358, Jinan, China.
| | - Qingtian Meng
- School of Physics and Electronics, Shandong Normal University, 250358, Jinan, China.
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Li W, Liang Y, Xing W. Quantum calculations for the abstraction and exchange channels of the H + SH+(v0 = 0, j0 = 0) reaction. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111306] [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]
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Zhu Z, Zhang A, He D, Li W. A new global potential energy surface of the SH 2+(X 4A'') system and quantum calculations for the S + + H 2( v = 0-3, j = 0) reaction. Phys Chem Chem Phys 2021; 23:4757-4767. [PMID: 33599223 DOI: 10.1039/d0cp06335e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new global potential energy surface (PES) for the ground state of the SH2+(X4A'') system is constructed using a permutation invariant polynomial neural network method. In ab initio calculations, the MRCI-F12 method with the AVTZ basis set is used. Furthermore, the dynamics calculations of the S+ + H2(v = 0-3, j = 0) → SH+ + H reaction are carried out based on the new PES. The reaction probabilities and integral cross sections are compared with available theoretical calculations. Present values are in general good agreement with the previous theoretical studies. However, some discrepancies can still be found due to different PESs used in the calculation. Furthermore, the vibrational energy of the reactant molecule can significantly enhance the reactivity compared to the translational energy. The differential cross sections indicated that the reaction mechanism is changed from the "head-on" rebound mechanism to the tripping mechanism with the increasing number of initial vibrational excitation state.
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Affiliation(s)
- Ziliang Zhu
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization and Key Laboratory for Structure and Environment Disaster Preventing of Agriculture Greenhouse, Weifang University of Science and Technology, Shouguang, 262700, People's Republic of China.
| | - Aijie Zhang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, China
| | - Di He
- School of Physics and Optoelectronics Engineering, Ludong University, Yantai 264025, China
| | - Wentao Li
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization and Key Laboratory for Structure and Environment Disaster Preventing of Agriculture Greenhouse, Weifang University of Science and Technology, Shouguang, 262700, People's Republic of China.
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Zhang W, Meng Q, Gao S, Song Y. Theoretical insight into the vibrational excitation effect of the S+(4S) + H2(X1∑+g) reaction. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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State-to-state dynamics of S+(2D) + H2(X1Σg+)(v, j) collision reaction based on the H2S+ (X 2A′′)potential energy surface. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.113021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chai SJ, Ma HY, Lü YL, Liu JY, Li YQ. Accurate global adiabatic potential energy surface for the ground state of AlH 2+by extrapolation to the complete basis set limit. Mol Phys 2020. [DOI: 10.1080/00268976.2019.1655599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- S. J. Chai
- Department of Physics, Liaoning University, Shenyang, People’s Republic of China
| | - H. Y. Ma
- Department of Physics, Liaoning University, Shenyang, People’s Republic of China
| | - Y. L. Lü
- Department of Physics, Liaoning University, Shenyang, People’s Republic of China
| | - J. Y. Liu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People’s Republic of China
| | - Y. Q. Li
- Department of Physics, Liaoning University, Shenyang, People’s Republic of China
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Simulation of experimental imaging results for four isotopic variants of the OH + CH4 reaction with a simple and relatively accurate theoretical approach. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.09.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhang L, Gao S, Meng Q, Pan J, Song Y. Accurate potential energy surface of H 2S +( X 2 A″) via extrapolation to the complete basis set limit and its use in dynamics study of S + ( D 2 ) + H 2 ( X 1 Σ g + ) reaction. J Chem Phys 2018; 149:154303. [PMID: 30342440 DOI: 10.1063/1.5046315] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The single-sheeted potential energy surface (PES) of H 2 S + ( X 2 A ' ' ) is developed based on the ab initio energies calculated by the multi-reference configuration interaction method including the Davidson correction. All the ab initio energies are first calculated using aug-cc-pVQdZ and aug-cc-pV5dZ basis sets, which are then extrapolated to the complete basis set (CBS) limit. A switching function is developed to model the transition of S + D 2 to S + S 4 . The many-body expansion formalism is employed to obtain the H 2 S + ( X 2 A ' ' ) PES by fitting such CBS energies and the root-mean square derivation is 0.0367 eV. The topographical features of the present PES are examined in detail, which are well consistent with previous studies. The quasiclassical trajectory method is subsequently utilized to study the S + D 2 + H 2 ( X 1 Σ g + ) → S H + ( X 3 Σ - ) + H ( S 2 ) reaction. The capture time, integral cross sections, and rovibrational distributions are calculated. By examining the capture time, it can be concluded that the title reaction is mainly controlled by the indirect mechanism for lower collision energies, while the direct and indirect mechanisms coexist and the latter plays a dominant role for higher collision energies.
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Affiliation(s)
- Lulu Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, 250358 Jinan, China
| | - Shoubao Gao
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, 250358 Jinan, China
| | - Qingtian Meng
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, 250358 Jinan, China
| | - Jie Pan
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, 250358 Jinan, China
| | - Yuzhi Song
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, 250358 Jinan, China
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