Photodissociation of C3H5Br and C4H 7Br at 234 nm

Hyun Kook Kim, Dababrata Paul, Kiryong Hong, Hana Cho, Kyoung Seok Lee, Tae Kyu Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The photodissociation dynamics of cyclopropyl bromide (C3H 5Br) and cyclobutyl bromide (C4H7Br) at 234 nm was investigated. A two-dimensional photofragment ion-imaging technique coupled with a [2+1] resonanceenhanced multiphoton ionization scheme was utilized to obtain speed and angular distributions of the nascent Br(2P 3/2) and Br*(2P1/2) atoms. The recoil anisotropies for the Br and Br* channels were measured to be βBr = 0.92 ± 0.03 and βBr* = 1.52 ± 0.04 for C3H5Br and βBr = 1.10 ± 0.03 and βBr* = 1.49 ± 0.05 for C 4H7Br. The relative quantum yield for Br was found to be ΦBr = 0.13 ± 0.03 and for C3H5Br and C4H7Br, respectively. The soft radical limit of the impulsive model adequately modeled the related energy partitioning. The nonadiabatic transition probability from the 3A' and 4A' potential energy surfaces was estimated and discussed.

Original languageEnglish
Pages (from-to)143-148
Number of pages6
JournalBulletin of the Korean Chemical Society
Volume33
Issue number1
DOIs
Publication statusPublished - 2012 Jan 20

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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