Observation of Vibronic Emission Spectrum of the Jet-Cooled 2,6-Difluorobenzyl Radical

Abstract

The jet-cooled 2,6-difluorobenzyl radical was generated and vibronically excited in a corona excited supersonic expansion from the gas mixture of 2,6-difluorotoluene and a buffer gas He. The vibronically resolved emission spectra of the jet-cooled 2,6-difluorobenzyl radical have been recorded with a long path monochromator in the visible region and analyzed to give accurate electronic transition and vibrational mode frequencies in the ground electronic state by comparing with those of 2,6-difluorotoluene as well as those from an ab initio calculation.