TY - JOUR
T1 - Observation of vibronic emission spectra of difluorobenzyl radicals
T2 - Jet-cooled 2,5-difluorobenzyl radical
AU - Ahn, Hyeon Geun
AU - Lee, Gi Woo
AU - Kim, Tae Kyu
AU - Lee, Sang Kuk
PY - 2008/3/20
Y1 - 2008/3/20
N2 - We report the first spectroscopic observation of jet-cooled 2,5-difluorobenzyl radical produced from 2,5-difluorotoluene seeded in a large amount of inert carrier gas He and vibronically excited in a corona excited supersonic expansion using a pinhole-type glass nozzle. The visible vibronic emission spectrum of the jet-cooled 2,5-difluorobenzyl radical recorded with a long path monochromator was analyzed to obtain an accurate measurement of the electronic transition between the D1 and D0 electronic states. The vibrational mode frequencies in the ground electronic state were determined by comparison with those of 2,5-difluorotoluene as well as those from an ab initio calculation.
AB - We report the first spectroscopic observation of jet-cooled 2,5-difluorobenzyl radical produced from 2,5-difluorotoluene seeded in a large amount of inert carrier gas He and vibronically excited in a corona excited supersonic expansion using a pinhole-type glass nozzle. The visible vibronic emission spectrum of the jet-cooled 2,5-difluorobenzyl radical recorded with a long path monochromator was analyzed to obtain an accurate measurement of the electronic transition between the D1 and D0 electronic states. The vibrational mode frequencies in the ground electronic state were determined by comparison with those of 2,5-difluorotoluene as well as those from an ab initio calculation.
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U2 - 10.1016/j.cplett.2008.02.044
DO - 10.1016/j.cplett.2008.02.044
M3 - Article
AN - SCOPUS:40849084887
SN - 0009-2614
VL - 454
SP - 207
EP - 211
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -