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题名: Photofragment translational spectroscopy of 1-bromo-3-fluorobenzene and 1-bromo-4-fluorobenzene at 266 nm
作者: Gu, XB;  Wang, GJ;  Huang, JH;  Han, KL;  He, GZ;  Lou, NQ
刊名: JOURNAL OF PHYSICAL CHEMISTRY A
发表日期: 2001-01-18
DOI: 10.1021/jp003479q
卷: 105, 期:2, 页:354-362
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: The ultraviolet photodissociation of 1-bromo-3-fluorobenzene and 1-bromo-4-fluorobenzene at 266 nm has been performed on a universal crossed molecular beams machine combined with the photofragment translational spectroscopy (PTS) detection technique. The time-of-flight (TOF) spectra of Br and FC6H4 photofragments have been measured. The observed translational energy distributions P(E-t) of photofragments revealed that about 46.8 +/- 3.3% and 41.7 +/- 3.0% of the available energy are partitioned into translational energy and the anisotropy parameter beta is 0.7 +/- 0.1 and -0.4 +/- 0.1 for 1-bromo-3-fluorobenzene and 1-bromo-4-fluorobenzene, in accord with that of bromobenzene (-0.7), indicating significant change caused by the fluorine atom substitution. To better interpret the experimental results, ab initio calculations have been performed and the calculation results are in good agreement with the experimental results. A plausible photodissociation mechanism is suggested, and the substitution effect of the fluorine atom is discussed.
关键词[WOS]: MOLECULAR-BEAMS ;  PHOTO-DISSOCIATION ;  193.3 NM ;  248 NM ;  ANGULAR-DISTRIBUTION ;  STATE DISTRIBUTIONS ;  ENERGY-DISTRIBUTION ;  ARYL HALIDES ;  PHOTODISSOCIATION ;  DYNAMICS
语种: 英语
WOS记录号: WOS:000166490800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138999
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Gu, XB,Wang, GJ,Huang, JH,et al. Photofragment translational spectroscopy of 1-bromo-3-fluorobenzene and 1-bromo-4-fluorobenzene at 266 nm[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2001,105(2):354-362.
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