Competitive Bond Rupture in the Photodissociation of Bromoacetyl Chloride and 2- and 3-Bromopropionyl Chloride: Adiabatic versus Diabatic Dissociation
文献类型：期刊论文
| 作者 | Hsu, Ming-Yi1; Tsai, Po-Yu1,2; Wei, Zheng-Rong3; Chao, Meng-Hsuan1; Zhang, Bing3; Kasai, Toshio1,4; Lin, King-Chuen1,2 |
| 刊名 | CHEMPHYSCHEM
 |
| 出版日期 | 2013-04-02 |
| 卷号 | 14期号:5页码:936-945 |
| 关键词 | cleavage reactions bond energy reaction mechanisms diabatic effects velocity ion imaging |
| 英文摘要 | Competitive bond dissociation mechanisms for bromoacetyl chloride and 2- and 3-bromopropionyl chloride following the 1[n(O)*(CO)] transition at 234235 nm are investigated. Branching ratios for CBr/CCl bond fission are found by using the (2+1) resonance-enhanced multiphoton ionization (REMPI) technique coupled with velocity ion imaging. The fragment branching ratios depend mainly on the dissociation pathways and the distances between the orbitals of Br and the CO chromophore. CCl bond fission is anticipated to follow an adiabatic potential surface for a strong diabatic coupling between the n(O)*(CO) and np(Cl)sigma*(CCl) bands. In contrast, CBr bond fission is subject to much weaker coupling between n(O)*(CO) and np(Br)sigma*(CBr). Thus, a diabatic pathway is preferred for bromoacetyl chloride and 2-bromopropionyl chloride, which leads to excited-state products. For 3-bromopropionyl chloride, the available energy is not high enough to reach the excited-state products such that CBr bond fission must proceed through an adiabatic pathway with severe suppression by nonadiabatic coupling. The fragment translational energies and anisotropy parameters for the three molecules are also analyzed and appropriately interpreted. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Chemistry ; Physics |
| 关键词[WOS] | ENHANCED MULTIPHOTON IONIZATION ; CURVE CROSSING PROBLEMS ; NONADIABATIC TRANSITION ; MOLECULAR-OXYGEN ; PRODUCT STATE ; ALPHA-BOND ; 235 NM ; C-BR ; FISSION ; EXCITATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316624600011 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/911]  |
| 专题 | 武汉物理与数学研究所_原子分子光物理研究部 |
| 作者单位 | 1.Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan 2.Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan 3.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 4.Osaka Univ, Grad Sch Sci, Dept Chem, Toyonaka, Osaka 5600043, Japan |
| 推荐引用方式 GB/T 7714 | Hsu, Ming-Yi,Tsai, Po-Yu,Wei, Zheng-Rong,et al. Competitive Bond Rupture in the Photodissociation of Bromoacetyl Chloride and 2- and 3-Bromopropionyl Chloride: Adiabatic versus Diabatic Dissociation[J]. CHEMPHYSCHEM,2013,14(5):936-945. |
| APA | Hsu, Ming-Yi.,Tsai, Po-Yu.,Wei, Zheng-Rong.,Chao, Meng-Hsuan.,Zhang, Bing.,...&Lin, King-Chuen.(2013).Competitive Bond Rupture in the Photodissociation of Bromoacetyl Chloride and 2- and 3-Bromopropionyl Chloride: Adiabatic versus Diabatic Dissociation.CHEMPHYSCHEM,14(5),936-945. |
| MLA | Hsu, Ming-Yi,et al."Competitive Bond Rupture in the Photodissociation of Bromoacetyl Chloride and 2- and 3-Bromopropionyl Chloride: Adiabatic versus Diabatic Dissociation".CHEMPHYSCHEM 14.5(2013):936-945. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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