The mode specificity plays an important role in understanding the fundamental reaction dynamics. This work reports a theoretical study of the rotational mode specificity of the reactant CHD3(JK) in the prototypical hydrocarbon oxidation reaction O(3P)+CHD3→OH+CD3. The time-dependent quantum wave packet method combined with a seven-dimensional reduced model is employed to calculate the reaction probability on an accurate potential energy surface. The obtained reaction probability depends on the values of both K and Ktot with PKtot = K = 0 > PKtot = K = J > PKtot = J,K = 0 = PKtot = 0,K = J. This observation can be well rationalized by the reactant alignment pictures. Rotational excitations of CHD3 up to the angular momentum quantum number J = 4 have a very weak enhancement effect on the reaction except for the state (J = 4, K = 0). In addition, the rotationally excited states of CHD3 with K = 0 promote the reaction more than those with K = J. The quantum dynamics calculations indicate that the K = 0 enhancements are mainly caused by the contributions from the components with K = Ktot = 0. The components correspond to the tumbling rotation of CHD3, which enlarges the range of the reactive initial attack angles.
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February 2019
Research Article|
February 01 2019
Understanding rotational mode specificity in the O(3P)+CHD3→ OH+CD3 reaction by simple reactant alignment pictures†
Special Collection:
Special Issue dedicated to Professor Kopin Liu on his 70th Birthday
Rui Liu;
Rui Liu
Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
, Wuhan 430071, China
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Hong-wei Song;
Hong-wei Song
Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
, Wuhan 430071, China
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Ming-hui Yang
Ming-hui Yang
*
Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
, Wuhan 430071, China
*Author to whom correspondence should be addressed. E-mail: [email protected]
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*Author to whom correspondence should be addressed. E-mail: [email protected]
†
Dedicated to Professor Kopin Liu on the occasion of his 70th birthday.
Chin. J. Chem. Phys. 32, 46–52 (2019)
Article history
Received:
October 30 2018
Accepted:
December 21 2018
Citation
Rui Liu, Hong-wei Song, Ming-hui Yang; Understanding rotational mode specificity in the O(3P)+CHD3→ OH+CD3 reaction by simple reactant alignment pictures. Chin. J. Chem. Phys. 1 February 2019; 32 (1): 46–52. https://doi.org/10.1063/1674-0068/cjcp1810238
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