Photolysis of n-C3H7I and i-C3H7I at 266 nm: Effect of Alkyl Radical Branching on the Dissociation Dynamics of the C-I Bond
文献类型：期刊论文
| 作者 | Zhang Feng2; Wang Yan-Mei1,3; Zhang Bing1,3; Feng Wen-Lin2 |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2010-07-01 |
| 卷号 | 26期号:7页码:1903-1908 |
| 关键词 | Photodissociation dynamics n-C3H7I i-C3H7I Ion imaging |
| 产权排序 | 第一 |
| 英文摘要 | Photodissociation dynamics of n-C3H7I and i-C3H7I at 266 nm were investigated using an ion imaging technique combined with resonance enhanced multiphoton ionization (REMPI). Information on energy disposal and a nonadiabatic transition between the dissociative electronic states involved in the photodissociation of both molecules were analyzed and compared. The fraction of internal energy in the I channel is greater than that in the I* channel for both molecules. As the alkyl group becomes more branched the energy distribution of the atom fragments (I and I*) becomes obviously wider suggesting that the alkyl radical at the.. carbon atomhas more complicated models of the ro. vibration models. On the other hand, the relative oscillator strengths of these molecules that were pumped using 266 nm photons show a small difference in the (3)Q(0) <- X transition. The probability of yielding an I* fragment decreases markedly from 0.72 for n-C3H7I to 0.46 for i-C3H7I. This is attributed to the greater contribution of the bending modes for I and I* during the photodissociation of i-C3H7I than that of n-C3H7I leading to an enhancement of the nonadiabatic transition between the (3)Q(0) and (1)Q(1) states. Additionally, the (3)Q(0) <- X transition is not a completely parallel transition for both molecules and the angle between the transition dipole moment and the bond axis is estimated to be about 15 degrees. for n-C3H7I and 18 degrees for i-C3H7I, respectively. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 原子分子物理学 |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | MAGNETIC CIRCULAR-DICHROISM ; RESONANCE RAMAN-SPECTRA ; PHOTODISSOCIATION DYNAMICS ; A-BAND ; PHOTOFRAGMENTATION DYNAMICS ; METHYL-IODIDE ; CH3I ; EXCITATION ; DEPENDENCE ; CONTINUUM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279776400026 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/2052]  |
| 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.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Chongqing Univ Technol, Sch Optoelect Informat, Chongqing 400051, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Feng,Wang Yan-Mei,Zhang Bing,et al. Photolysis of n-C3H7I and i-C3H7I at 266 nm: Effect of Alkyl Radical Branching on the Dissociation Dynamics of the C-I Bond[J]. ACTA PHYSICO-CHIMICA SINICA,2010,26(7):1903-1908. |
| APA | Zhang Feng,Wang Yan-Mei,Zhang Bing,&Feng Wen-Lin.(2010).Photolysis of n-C3H7I and i-C3H7I at 266 nm: Effect of Alkyl Radical Branching on the Dissociation Dynamics of the C-I Bond.ACTA PHYSICO-CHIMICA SINICA,26(7),1903-1908. |
| MLA | Zhang Feng,et al."Photolysis of n-C3H7I and i-C3H7I at 266 nm: Effect of Alkyl Radical Branching on the Dissociation Dynamics of the C-I Bond".ACTA PHYSICO-CHIMICA SINICA 26.7(2010):1903-1908. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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