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题名: Dynamics of OH Formation in the Photodissociation of o-Nitrobenzoic Acid at 295 and 355 nm
作者: Zhou, Can-Hua1;  Cheng, Shi-Bo1;  Sun, Ju-Long1;  Yin, Hong-Ming1;  Han, Ke-Li1;  He, Guo-Zhong1
通讯作者: 尹鸿鸣
刊名: JOURNAL OF PHYSICAL CHEMISTRY A
发表日期: 2009-04-30
DOI: 10.1021/jp900567u
卷: 113, 期:17, 页:4923-4929
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1101
产权排名: 1;1
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: Photodissociation dynamics of o-nitrobenzoic acid at 295 and 355 nm is studied by probing the nascent OH photoproduct employing the single-photon laser-induced fluorescence technique. At both of the photolysis wavelengths, the OH fragments are found to be vibrationally cold but have different rotational state distributions. Upon photolysis at 295 nm, the relative population of OH in different rotational states does not follow the Boltzmann equilibrium distribution, whereas upon photolysis at 355 rim, a Boltzmann distribution is observed with a rotational temperature of 1010 +/- 100 K. Between the two spin-orbit states, (2)Pi(3/2) and (2)Pi(1/2) the former is found to be preferentially populated, and the distribution of the Pi(A') state for the Lambda-doublet is dominant at both of the wavelengths studied. Several possible dissociation pathways of o-nitrobenzoic acid leading to formation of the OH fragment are investigated computationally. Oil the basis of the theoretical and experimental studies, a possible mechanism of OH formation from the photodissociation of o-nitrobenzoic acid at 295 and 355 nm is proposed.
关键词[WOS]: LASER-INDUCED FLUORESCENCE ;  BENZOIC-ACID ;  STATE DISTRIBUTION ;  MONOMER ;  PRODUCT ;  DISSOCIATION ;  NITROTOLUENE ;  COMPLEXES ;  MECHANISM ;  FRAGMENT
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000265529800015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/102015
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, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Zhou, Can-Hua,Cheng, Shi-Bo,Sun, Ju-Long,et al. Dynamics of OH Formation in the Photodissociation of o-Nitrobenzoic Acid at 295 and 355 nm[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2009,113(17):4923-4929.
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