Photodissociation dynamics of propionyl chloride in the ultraviolet region
文献类型：期刊论文
| 作者 | Wei, Zheng-Rong3; Zhang, Xiao-Peng1,2; Lee, Wei-Bin1,2; Zhang, Bing3; Lin, King-Chuen1,2 |
| 刊名 | JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2009-01-07 |
| 卷号 | 130期号:1 |
| 关键词 | ground states molecule-photon collisions photodissociation photoionisation two-photon processes |
| 通讯作者 | Lin, KC (reprint author), Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan. |
| 英文摘要 | Velocity imaging technique combined with (2+1) resonance-enhanced multiphoton ionization (REMPI) is used to detect primary photodissociation of propionyl chloride. In one-color experiments at 235 nm, the Cl and Cl-* fragments are produced rapidly, leading to a fraction of translational energy release of 0.37 and 0.35, anisotropy parameters of 1.1 and 0.8, and quantum yield of 0.67 and 0.33, respectively, when initial excitation of the (1)(n, pi(*))(CO) band is coupled to the (1)(n(Cl), sigma(*)(C-Cl)) repulsive configuration. The resulting propionyl radical with sufficient internal energy may undergo secondary dissociation to yield CO that is characteristic of an isotropic distribution. The REMPI spectra of the CO (0,0) and (1,1) bands are measured, giving rise to a Boltzmann rotational temperature of 1200 and 770 K, respectively, and a Boltzmann vibrational temperature of 2800 K. A minor channel of HCl elimination is not detected, probably because of predissociation in two-photon absorption at 235 nm. In two-color experiments comprising an additional 248 nm photolyzing laser, Cl and Cl-* are produced with a fraction of translational energy release of 0.43 and 0.40 and anisotropy parameters of 1.0 and 0.6, respectively. The secondary production of CO is not observed although the internal energy partitioned in the propionyl radical is in the proximity of the dissociation barrier. In either experimental scheme, a small component appearing in the center of the Cl and Cl-* images is proposed to stem from ground state dissociation via internal conversion. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | AB-INITIO CALCULATIONS ; C-CL BOND ; ACETYL-CHLORIDE ; NM PHOTODISSOCIATION ; MULTIPHOTON IONIZATION ; MOLECULAR-OXYGEN ; LASER-PULSES ; ALPHA-BOND ; DISSOCIATION ; VELOCITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000262372600012 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/2286]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 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 |
| 推荐引用方式 GB/T 7714 | Wei, Zheng-Rong,Zhang, Xiao-Peng,Lee, Wei-Bin,et al. Photodissociation dynamics of propionyl chloride in the ultraviolet region[J]. JOURNAL OF CHEMICAL PHYSICS,2009,130(1). |
| APA | Wei, Zheng-Rong,Zhang, Xiao-Peng,Lee, Wei-Bin,Zhang, Bing,&Lin, King-Chuen.(2009).Photodissociation dynamics of propionyl chloride in the ultraviolet region.JOURNAL OF CHEMICAL PHYSICS,130(1). |
| MLA | Wei, Zheng-Rong,et al."Photodissociation dynamics of propionyl chloride in the ultraviolet region".JOURNAL OF CHEMICAL PHYSICS 130.1(2009). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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