Effects of C-H stretching excitation on the dynamics of the O(1D) + CHD3 → OH/OD + CD3/CHD2 reaction

Lv，Jing1,2; Yang，Jiayue2; Zhang，Dong2; Blauert，Florian3; Jiang，Bo2; Dai，Dongxu2; Zhang，Weiqing2; Wu，Guorong2; Yang，Wenshao1; Shuai，Quan2; Yang，Xueming2,4,5

2023-07-14

10.1063/5.0153370

Journal of Chemical Physics   Impact Factor & Quartile

0021-9606

1089-7690

The vibrationally excited reaction O(D) + CHD(ν = 1) has been investigated by crossed-molecular-beam experiments with a time-sliced velocity map imaging technique. Detailed and quantitative information is extracted on the C-H stretching excitation effects on the reactivity and dynamics of the title reaction, with the help of preparation of C-H stretching excited CHD molecules by direct infrared excitation. Experimental results show that the vibrational stretching excitation of the C-H bond almost does not affect the relative contributions between different dynamical pathways for all product channels. For the OH + CD product channel, the vibrational energy of the C-H stretching excited CHD reagent is channeled exclusively into the vibrational energy of the OH products. The vibrational excitation of the CHD reactant changes the reactivities for the ground-state and umbrella-mode-excited CD channels very modestly, while it significantly suppresses the corresponding CHD channels. For the CHD(ν = 1) channel, the stretching excited C-H bond of the CHD molecule acts almost as a pure spectator.

SCI

English

Corresponding

National Natural Science Foundation of China["21973084","22173100","22288201"] ; Department of Science and Technology of Liaoning Province[2023-MS-008] ; Zhejiang Provincial Natural Science Foundation of China[LZ22B030003]

Chemistry ; Physics

Chemistry, Physical ; Physics, Atomic, Molecular & Chemical

WOS:001026391500015

AIP Publishing

CHEMISTRY

2-s2.0-85164282232

Scopus

1.Hangzhou Institute of Advanced Studies,Zhejiang Normal University,Hangzhou,311231,China
2.State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
3.Georg-August-Universität Göttingen,Göttingen,Wilhelmsplatz 1,37073,Germany
4.Hefei National Laboratory,Hefei,230088,China
5.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China

Lv，Jing,Yang，Jiayue,Zhang，Dong,et al. Effects of C-H stretching excitation on the dynamics of the O(1D) + CHD3 → OH/OD + CD3/CHD2 reaction[J]. Journal of Chemical Physics,2023,159(2).

Lv，Jing.,Yang，Jiayue.,Zhang，Dong.,Blauert，Florian.,Jiang，Bo.,...&Yang，Xueming.(2023).Effects of C-H stretching excitation on the dynamics of the O(1D) + CHD3 → OH/OD + CD3/CHD2 reaction.Journal of Chemical Physics,159(2).

Lv，Jing,et al."Effects of C-H stretching excitation on the dynamics of the O(1D) + CHD3 → OH/OD + CD3/CHD2 reaction".Journal of Chemical Physics 159.2(2023).