WIPM OpenIR  > 2011年以前论文发表(包括2011年)
Photodissociation of cis-, trans-, and 1,1-Dichloroethylene in the Ultraviolet Range: Characterization of Cl(P-2(J)) Elimination
Hua, Linqiang2,3; Zhang, Xiaopeng1,4; Lee, Wei-Bin1,4; Chao, Meng-Hsuan1,4; Zhang, Bing2,3; Lin, King-Chuen1,4
2010-01-14
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
Volume114Issue:1Pages:37-44
Contribution Rank第二
SubtypeArticle
AbstractBy using photofragment velocity imaging detection coupled with a (2 + 1) resonance-enhanced multiphoton ionization technique, the elimination channel of spin-orbit chlorine atoms in photodissociation of cis-, trans-, and 1,1-dichloroethylene at two photolysis wavelengths of 214.5 and 235 nm is investigated. Translational energy and angular distributions of Cl(P-2(J)) fragmentation are acquired. The Cl(P-2(J)) fragments are produced by two competing channels. The fast dissociation component with higher translational energy is characterized by a Gaussian distribution, resulting from a curve crossing of the initially excited (pi, pi*) state to nearby repulsive (pi, sigma*) and/or (n, sigma*). In contrast, the slow component with a lower translational energy is characterized by a Boltzmann distribution, which dissociates on the vibrationally hot ground state relaxed from the (pi, pi*) state via internal conversion. cis-C2H2Cl2 is found to have a larger branching of Boltzmann component than the other two isomers, The fraction of available energy partitioning into translation increases along the trend of cis- < trans- < 1,1-C2H2Cl2. This trend may be fitted by a rigid radical model and interpreted by means of a torque generated during the C-Cl bond cleavage. The anisotropy parameters are determined, and the transition dipole moments are expected to be essentially along the C=C bond axis. The results are also predicted theoretically. The relative quantum yields of Cl(P-2(J)) have a similar value for the three isomers at the two photolysis wavelengths.
Department分子光谱与分子动力学
WOS HeadingsScience & Technology ; Physical Sciences
Subject Area原子分子物理学
DOI10.1021/jp907030e
WOS KeywordTRIATOMIC PHOTOFRAGMENT SPECTRA ; TRANSLATIONAL ENERGY-DISTRIBUTIONS ; ULTRAFAST INTERNAL-CONVERSION ; NO2 PHOTODISSOCIATION ; ANGULAR-DISTRIBUTIONS ; CL ATOMS ; HCL ; CHLOROETHYLENES ; NM ; MOLECULES
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000273268900005
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.wipm.ac.cn/handle/112942/2002
Collection2011年以前论文发表(包括2011年)
Affiliation1.Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 10039, Peoples R China
4.Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan
Recommended Citation
GB/T 7714
Hua, Linqiang,Zhang, Xiaopeng,Lee, Wei-Bin,et al. Photodissociation of cis-, trans-, and 1,1-Dichloroethylene in the Ultraviolet Range: Characterization of Cl(P-2(J)) Elimination[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2010,114(1):37-44.
APA Hua, Linqiang,Zhang, Xiaopeng,Lee, Wei-Bin,Chao, Meng-Hsuan,Zhang, Bing,&Lin, King-Chuen.(2010).Photodissociation of cis-, trans-, and 1,1-Dichloroethylene in the Ultraviolet Range: Characterization of Cl(P-2(J)) Elimination.JOURNAL OF PHYSICAL CHEMISTRY A,114(1),37-44.
MLA Hua, Linqiang,et al."Photodissociation of cis-, trans-, and 1,1-Dichloroethylene in the Ultraviolet Range: Characterization of Cl(P-2(J)) Elimination".JOURNAL OF PHYSICAL CHEMISTRY A 114.1(2010):37-44.
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