DICP OpenIR
Effect of CH stretching excitation on the reaction dynamics of F + CHD3 -> DF + WCHD2
Yang, Jiayue1; Zhang, Dong1; Chen, Zhen1; Blauert, Florian2; Jiang, Bo1; Dai, Dongxu1,3; Wu, Guorong1,3; Zhang, Donghui1,3; Yang, Xueming1,3
Source PublicationJOURNAL OF CHEMICAL PHYSICS
2015-07-28
DOI10.1063/1.4927504
Volume143Issue:4
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectPhysics, Atomic, Molecular & Chemical
WOS Research AreaPhysics
WOS KeywordCROSS-SECTIONS ; VIBRATIONAL-EXCITATION ; BIMOLECULAR REACTIONS ; CHEMICAL-REACTIONS ; MODE ; PRODUCT ; BOND ; CHEMISTRY ; ATOMS ; ION
AbstractThe vibrationally excited reaction of F + CHD3(v(1) = 1) -> DF + CHD2 at a collision energy of 9.0 kcal/mol is investigated using the crossed-beams and time-sliced velocity map imaging techniques. Detailed and quantitative information of the CH stretching excitation effects on the reactivity and dynamics of the title reaction is extracted with the help of an accurate determination of the fraction of the excited CHD3 reagent in the crossed-beam region. It is found that all vibrational states of the CHD2 products observed in the ground-state reaction, which mainly involve the excitation of the umbrella mode of the CHD2 products, are severely suppressed by the CH stretching excitation. However, there are four additional vibrational states of the CHD2 products appearing in the excited-state reaction which are not presented in the ground-state reaction. These vibrational states either have the CH stretching excitation retained or involve one quantum excitation in the CH stretching and the excitation of the umbrella mode. Including all observed vibrational states, the overall cross section of the excited-state reaction is estimated to be 66.6% of that of the ground-state one. Experimental results also show that when the energy of CH stretching excitation is released during the reaction, it is deposited almost exclusively as the rovibrational energy of the DF products, with little portion in the translational degree of freedom. For vibrational states of the CHD2 products observed in both ground-and excited-state reactions, the CH stretching excitation greatly suppresses the forward scattered products, causing a noticeable change in the product angular distributions. (C) 2015 AIP Publishing LLC.
Language英语
WOS IDWOS:000358929100044
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146424
Collection中国科学院大连化学物理研究所
Affiliation1.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
2.Univ Gottingen, Fac Chem, Dynam Sutfaces, D-37077 Gottingen, Germany
3.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Yang, Jiayue,Zhang, Dong,Chen, Zhen,et al. Effect of CH stretching excitation on the reaction dynamics of F + CHD3 -> DF + WCHD2[J]. JOURNAL OF CHEMICAL PHYSICS,2015,143(4).
APA Yang, Jiayue.,Zhang, Dong.,Chen, Zhen.,Blauert, Florian.,Jiang, Bo.,...&Yang, Xueming.(2015).Effect of CH stretching excitation on the reaction dynamics of F + CHD3 -> DF + WCHD2.JOURNAL OF CHEMICAL PHYSICS,143(4).
MLA Yang, Jiayue,et al."Effect of CH stretching excitation on the reaction dynamics of F + CHD3 -> DF + WCHD2".JOURNAL OF CHEMICAL PHYSICS 143.4(2015).
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