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题名: CH Stretching Excitation in the Early Barrier F + CHD3 Reaction Inhibits CH Bond Cleavage
作者: Zhang, Weiqing1, 2;  Kawamata, Hiroshi1;  Liu, Kopin1
通讯作者: 刘国平
刊名: SCIENCE
发表日期: 2009-07-17
DOI: 10.1126/science.1175018
卷: 325, 期:5938, 页:303-306
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1102
产权排名: 2;1
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Most studies of the impact of vibrational excitation on molecular reactivity have focused on reactions with a late barrier (that is, a transition state resembling the products). For an early barrier reaction, conventional wisdom predicts that a reactant's vibration should not couple efficiently to the reaction coordinate and thus should have little impact on the outcome. We report here an in-depth experimental study of the reactivity effects exerted by reactant C-H stretching excitation in a prototypical early-barrier reaction, F + CHD3. Rather counterintuitively, we find that the vibration hinders the overall reaction rate, inhibits scission of the excited bond itself (favoring the DF + CHD2 product channel), and influences the coproduct vibrational distribution despite being conserved in the CHD2 product. The results highlight substantial gaps in our predictive framework for state-selective polyatomic reactivity.
关键词[WOS]: PRODUCT ENERGY-DISTRIBUTION ;  REACTION DYNAMICS ;  MODE ;  SURFACE ;  ATOMS ;  PAIRS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000268036600041
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101773
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, Weiqing,Kawamata, Hiroshi,Liu, Kopin. CH Stretching Excitation in the Early Barrier F + CHD3 Reaction Inhibits CH Bond Cleavage[J]. SCIENCE,2009,325(5938):303-306.
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