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The dynamics of br formation from the primary and secondary C–Br bond dissociation of oxalyl bromide near 265 and 234 nm
Abstract
The photodissociation dynamics of oxalyl bromide is investigated near 265 and 234 nm using the velocity map ion imaging technique coupled with a state selective [2+1] resonance-enhanced multiphoton ionization scheme. The translational energy distribution and 2 PJ, J = 3/2, 1/2 parameters of the Br atom formation process are extracted from two-dimensional ion images. The trimodal energy distribution of Br(2 P3/2) atoms is attributed to the primary C–Br bond fission as well as the secondary dissociation of brominecontaining C2O2Br radicals produced from the primary Br and Br* pathways. The conclusions are confirmed by the recoil anisotropy and the distribution width corresponding to the individual components. The branching ratio Br(2 P3/2)/Br(2 P1/2) confirms the excitation energy dependence.
Supporting agencies: This work was supported by the Basic Science Research Program 2010-0006570 through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology.
About the Authors
D. Paul
Department of Chemistry and Chemistry Institute for Functional Materials,
Pusan National University; Department of Chemistry, Bangabandhu Sheikh Mujibur Rahman Science and Technology University
Korea, Republic of
Korea, Republic of
Busan 609-735
Gopalganj-8100
N. K. Kim
Department of Chemistry and Chemistry Institute for Functional Materials,
Pusan National University
Korea, Republic of
Korea, Republic of
Busan 609-735
Md. Mostafizur Rahman
Department of Chemistry, Shahjalal University of Science and Technology
Bangladesh
Bangladesh
Sylhet-3114
T. K. Kim
Department of Chemistry and Chemistry Institute for Functional Materials,
Pusan National University; Department of Chemistry, Yonsei University
Korea, Republic of
Korea, Republic of
Busan 609-735
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Review
For citations:
Paul D., Kim N.K., Mostafizur Rahman M., Kim T.K. The dynamics of br formation from the primary and secondary C–Br bond dissociation of oxalyl bromide near 265 and 234 nm. Zhurnal Prikladnoii Spektroskopii. 2021;88(4):556-562.
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