### Abstract

Time-dependent (TD) quantum dynamics calculation for the title reaction has been carried out in full mathematical (six) dimensions on a new potential energy surface (denoted TSH3). Our numerical calculation shows that as far as total reaction probabilities and cross sections are concerned, the CN vibration behaves like a spectator bond when both reagents are at ground vibrational state. The vibrational excitation of CN slightly decreases the reaction probability and cross section while vibrational excitation of H_{2} considerably enhances the reaction probability and cross section. The reaction probability is enhanced by excitations of H_{2} rotation and more so of CN rotation. Overall, the reaction proceeds by a direct abstraction path without contribution from the insertion process. Comparison of our calculated rate constant with experimental measurements indicates that the effective barrier of the TSH3 PES for the title reaction is perhaps too high by about 0.3 kcal/mol.

Original language | English (US) |
---|---|

Pages (from-to) | 3509-3516 |

Number of pages | 8 |

Journal | Journal of Chemical Physics |

Volume | 108 |

Issue number | 9 |

State | Published - Mar 1 1998 |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics

### Cite this

*Journal of Chemical Physics*,

*108*(9), 3509-3516.

**Quantum dynamics study of H2+CN → HCN+H reaction in full dimensions.** / Zhu, Wei; Zhang, John; Zhang, Y. C.; Zhang, Y. B.; Zhan, L. X.; Zhang, S. L.; Zhang, D. H.

Research output: Contribution to journal › Article

*Journal of Chemical Physics*, vol. 108, no. 9, pp. 3509-3516.

}

TY - JOUR

T1 - Quantum dynamics study of H2+CN → HCN+H reaction in full dimensions

AU - Zhu, Wei

AU - Zhang, John

AU - Zhang, Y. C.

AU - Zhang, Y. B.

AU - Zhan, L. X.

AU - Zhang, S. L.

AU - Zhang, D. H.

PY - 1998/3/1

Y1 - 1998/3/1

N2 - Time-dependent (TD) quantum dynamics calculation for the title reaction has been carried out in full mathematical (six) dimensions on a new potential energy surface (denoted TSH3). Our numerical calculation shows that as far as total reaction probabilities and cross sections are concerned, the CN vibration behaves like a spectator bond when both reagents are at ground vibrational state. The vibrational excitation of CN slightly decreases the reaction probability and cross section while vibrational excitation of H2 considerably enhances the reaction probability and cross section. The reaction probability is enhanced by excitations of H2 rotation and more so of CN rotation. Overall, the reaction proceeds by a direct abstraction path without contribution from the insertion process. Comparison of our calculated rate constant with experimental measurements indicates that the effective barrier of the TSH3 PES for the title reaction is perhaps too high by about 0.3 kcal/mol.

AB - Time-dependent (TD) quantum dynamics calculation for the title reaction has been carried out in full mathematical (six) dimensions on a new potential energy surface (denoted TSH3). Our numerical calculation shows that as far as total reaction probabilities and cross sections are concerned, the CN vibration behaves like a spectator bond when both reagents are at ground vibrational state. The vibrational excitation of CN slightly decreases the reaction probability and cross section while vibrational excitation of H2 considerably enhances the reaction probability and cross section. The reaction probability is enhanced by excitations of H2 rotation and more so of CN rotation. Overall, the reaction proceeds by a direct abstraction path without contribution from the insertion process. Comparison of our calculated rate constant with experimental measurements indicates that the effective barrier of the TSH3 PES for the title reaction is perhaps too high by about 0.3 kcal/mol.

UR - http://www.scopus.com/inward/record.url?scp=0000336828&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000336828&partnerID=8YFLogxK

M3 - Article

VL - 108

SP - 3509

EP - 3516

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 9

ER -