Vibronic Spectroscopy of Jet-Cooled Benzyl-type Radicals Produced from 2-Fluoro-4-Chlorotoluene by Corona Discharge

E-mail: sklee@pusan.ac.krReceived August 13, 2013, Accepted September 5, 2013A home-made pinhole-type glass nozzle was employed to generate vibronically excited but jet-cooled benzyl-type radicals from precursor 2-fluoro-4-chlorotoluene with a large amount of carrier gas He, from which thevisible vibronic emission spectrum was recorded with a long-path monochromator. From an analysis of thespectrum observed, it was found that two benzyl-type radicals, 2-fluorobenzyl and 2-fluoro-4-chlorobenzylradicals, were formed from the precursor in corona discharge. The possible pathway for the production ofbenzyl-type radicals that can explain the spectroscopic observation is herein proposed. In addition, theelectronic energy of the D