TY - JOUR
T1 - Photodissociation dynamics of C2H4BrCl
T2 - Nonadiabatic dynamics with intrinsic Cs symmetry
AU - Lee, Kyoung Seok
AU - Paul, Dababrata
AU - Hong, Kiryong
AU - Cho, Ha Na
AU - Jung, Kwang Woo
AU - Kim, Tae Kyu
PY - 2009/12
Y1 - 2009/12
N2 - The photodissociation dynamics of 1,2-bromochloroethane (C2H4BrCl) was investigated near 234 nm. A two-dimen- sional photofragment ion-imaging technique coupled with a [2+1] resonance-enhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br(2P3/2) and Br*(2P1/2) atoms. The total trans- lational energy distributions for the Br and Br* channels were well characterized by Gaussian functions with average translational energies of 100 and 84 kJ/mol, respectively. The recoil anisotropies for the Br and Br* channels were measured to be β = 0.49 ± 0.05 for Br and 1.55 ± 0.05 for Br*. The relative quantum yield for Br* was found to be ΦBr* = 0.33 ± 0.03. The probability of nonadiabatic transition between A' states was estimated to be 0.46. The relevant nonadiabatic dynamics is discussed in terms of interaction between potential energy surfaces in Cs symmetry.
AB - The photodissociation dynamics of 1,2-bromochloroethane (C2H4BrCl) was investigated near 234 nm. A two-dimen- sional photofragment ion-imaging technique coupled with a [2+1] resonance-enhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br(2P3/2) and Br*(2P1/2) atoms. The total trans- lational energy distributions for the Br and Br* channels were well characterized by Gaussian functions with average translational energies of 100 and 84 kJ/mol, respectively. The recoil anisotropies for the Br and Br* channels were measured to be β = 0.49 ± 0.05 for Br and 1.55 ± 0.05 for Br*. The relative quantum yield for Br* was found to be ΦBr* = 0.33 ± 0.03. The probability of nonadiabatic transition between A' states was estimated to be 0.46. The relevant nonadiabatic dynamics is discussed in terms of interaction between potential energy surfaces in Cs symmetry.
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U2 - 10.5012/bkcs.2009.30.12.2962
DO - 10.5012/bkcs.2009.30.12.2962
M3 - Article
AN - SCOPUS:76649132663
SN - 0253-2964
VL - 30
SP - 2962
EP - 2968
JO - Bulletin of the Korean Chemical Society
JF - Bulletin of the Korean Chemical Society
IS - 12
ER -