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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 12
BKCSDE 34(12)
December 20, 2013 

Vibronic Spectroscopy of Jet-Cooled Benzyl-type Radicals Produced from 2-Fluoro-4-Chlorotoluene by Corona Discharge
Sang Youl Chae, Young Wook Yoon, Sang Kuk Lee*
Spectroscopy, Corona discharge, 2-Fluoro-4-chlorobenzyl radical, Reaction mechanism, Benzyl- type radical
A home-made pinhole-type glass nozzle was employed to generate vibronically excited but jet-cooled benzyltype radicals from precursor 2-fluoro-4-chlorotoluene with a large amount of carrier gas He, from which the visible vibronic emission spectrum was recorded with a long-path monochromator. From an analysis of the spectrum observed, it was found that two benzyl-type radicals, 2-fluorobenzyl and 2-fluoro-4-chlorobenzyl radicals, were formed from the precursor in corona discharge. The possible pathway for the production of benzyl-type radicals that can explain the spectroscopic observation is herein proposed. In addition, the electronic energy of the D1 → D0 transition and the vibrational mode frequencies in the D0 state of the 2-fluoro- 4-chlorobenzyl radical were determined for the first time.
3565 - 3569
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