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JU LIPING, HAN KELI, ZHANG JOHNZH. A THEORETICAL STUDY FOR H2 + CN ↔ HCN + H REACTION AND ITS KINETIC ISOTOPE EFFECTS WITH VARIATIONAL TRANSITION STATE THEORY. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2011. [DOI: 10.1142/s0219633606002635] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We present variational transition state theory (VTST) calculations for the H 2 + CN → HCN + H (R1) and D 2 + CN → DCN + D (R2) reactions and their reverses based on a global many-body expansion potential energy surface (PES) for ground-state H 2 CN (ter Horst MA, Schatz GC, Harding LB, J Chem Phys105:558, 1996). It is found that the tunneling effects are negligible over the 200–2000 K temperature range and non-negligible over 100–200 K for R1 and R2 reactions. The C–N bond acts almost as a spectator for both reactions. The present VTST rate constants are in good agreement with the available experimental results and the previous theoretical predictions for R1 and R2 reactions except for the overestimation of rate constants by VTST at lower temperatures that may be caused by recrossing effect. Additionally, the kinetic isotope effects are important for the forward R1 and R2 reactions, but not for the reverses of R1 and R2.
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Affiliation(s)
- LI-PING JU
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - KE-LI HAN
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - JOHN Z. H. ZHANG
- Department of Chemistry, New York University, New York, NY 10003, USA
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education (MOE), College of Chemistry and Chemical Engineering, Nanjing University, China
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Ma WY, Han KL, Wang ML, Zhang JZH. Time-dependent quantum wave packet study of H+HCN→H2+CN reaction. J Chem Phys 2002. [DOI: 10.1063/1.1481385] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Troya D, González M, Wu G, Schatz GC. A Quasiclassical Trajectory Study of the Cl + HCN → HCl + CN Reaction Dynamics. Microscopic Reaction Mechanism of the H(Cl) + HCN → H2(HCl) + CN Reactions. J Phys Chem A 2001. [DOI: 10.1021/jp003371a] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Diego Troya
- Departamento de Química, Universidad de La Rioja, C/Madre de Dios 51, 26006 Logroño, Spain
| | - Miguel González
- Departamento de Química Física i Centre de Recerca en Química Teòrica, Universitat de Barcelona, C/Martí i Franquès 1, 08028 Barcelona, Spain
| | - Guosheng Wu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
| | - George C. Schatz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
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Troya D, Baños I, González M, Wu G, ter Horst MA, Schatz GC. A quasiclassical trajectory study of the H+HCN→H2+CN reaction dynamics. J Chem Phys 2000. [DOI: 10.1063/1.1308090] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kreher C, Rinnenthal JL, Gericke KH. Vibrational state control of bimolecular reactions. J Chem Phys 1998. [DOI: 10.1063/1.475712] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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