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Photofragment translational spectroscopy of n-C3H7I and i-C3H7I near 280 and 304 nm
Xu, Xiling; Yu, Zijun; Bi, Weibin; Xiao, Daoqing; Yu, Dan; Du, Yikui; Zhu, Qihe
刊名JOURNAL OF PHYSICAL CHEMISTRY A
2008-03-06
DOI10.1021/jp0756956
112期:9页:1857-1863
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
关键词[WOS]PHOTODISSOCIATION DYNAMICS ; RECOIL ANISOTROPY ; METHYL-IODIDE ; A-BAND ; INTERNAL EXCITATION ; ENERGY DEPENDENCE ; INFRARED-SPECTRA ; ALKYL RADICALS ; KINETIC-ENERGY ; CF3I
英文摘要The photodissociation dynamics of propyl iodides n-C3H7I and i-C3H7I near 280 and 304 nm has been investigated with our mini-TOF photofragment translational spectrometer. When a single laser is applied for both the photodissociation of parent molecules and the REMPI of I atom photofragments, the TOF spectra of photofragments I*('P-1/2) and I (P-2(3/2)) are obtained at four different wavelengths for these two iodides. For n-C3H7I, some small vibrational peaks are partially resolved (with separation of similar to 522 cm(-1), corresponding to the RCH2 deformation frequency of the fragment n-C3H7) at 281.73, 279.71, and 304.67 nm. These results show that the RCH2 deformation is mostly excited. For i-C3H7I, we obtain some partially resolved vibrational peaks (with separation of similar to 352 cm(-1), corresponding to the HC(CH3)(2) out-of-plane bending frequency of the fragment i-C3H7) at 281.73 nm only. For n-C3H7I, the partitioning values of the available energy (E) over bar (int)/E-avl are 0.48 at 281.73 nm and 0.49 at 304.02 nm for the I* channel, and 0.52 at both 279.71 and 304.67 nm for the I channel. These energy partitioning values are comparable with the previous results at different wavelengths in the literature. For i-C3H7I, the (E) over bar (int)/E-avl values are 0.61 at 281.73 nm, 0.65 at 304.02 nm for the I* channel, and 0.62 at 279.71 nm, 0.49 at 304.67 nm for the I channel. The potential-energy-surface crossing and the beta values have also been discussed.
语种英语
WOS记录号WOS:000253512600003
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141151
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China
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Xu, Xiling,Yu, Zijun,Bi, Weibin,et al. Photofragment translational spectroscopy of n-C3H7I and i-C3H7I near 280 and 304 nm[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2008,112(9):1857-1863.
APA Xu, Xiling.,Yu, Zijun.,Bi, Weibin.,Xiao, Daoqing.,Yu, Dan.,...&Zhu, Qihe.(2008).Photofragment translational spectroscopy of n-C3H7I and i-C3H7I near 280 and 304 nm.JOURNAL OF PHYSICAL CHEMISTRY A,112(9),1857-1863.
MLA Xu, Xiling,et al."Photofragment translational spectroscopy of n-C3H7I and i-C3H7I near 280 and 304 nm".JOURNAL OF PHYSICAL CHEMISTRY A 112.9(2008):1857-1863.
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