Photodissociation dynamics of C2H4BrCl: Nonadiabatic dynamics with intrinsic Cs symmetry

Kyoung Seok Lee, Dababrata Paul, Kiryong Hong, Ha Na Cho, Kwang Woo Jung, Tae Kyu Kim

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6 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2962-2968
Number of pages7
JournalBulletin of the Korean Chemical Society
Issue number12
Publication statusPublished - 2009 Dec

All Science Journal Classification (ASJC) codes

  • Chemistry(all)


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