# LASER-INDUCED FLUORESCENCE SPECTROSCOPY OF THE BaNC FREE RADICAL IN A SUPERSONIC JET

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 Title: LASER-INDUCED FLUORESCENCE SPECTROSCOPY OF THE BaNC FREE RADICAL IN A SUPERSONIC JET Creators: Mikhailov, Victor A.; Wheeler, Martyn D.; Ellis, Andrew M. Issue Date: 2003 Publisher: Ohio State University Abstract: Laser induced fluorescence spectra of the BaNC free radical in a supersonic jet have been recorded for the first time. A strong and rather complicated excitation spectrum was observed between $18000-19500 cm^{-1}$. A partial assignment has been made but uncertainties remain. In the corresponding dispersed fluorescence spectra, long progressions in the bending mode have been identified. The low frequency of this mode, $70 cm^{-1}$ for the fundamental, demonstrates that BaNC is relatively floppy in the bending coordinate in its ground electronic state. The intensity profiles of the bending progressions suggest that BaNC undergoes a substantial change in its equilibrium bond angle on electronic excitation. This is most likely due to formation of a bent structure in the excited electronic state. Description: Author Institution: Department of Chemistry, University of Leicester URI: http://hdl.handle.net/1811/21114 Other Identifiers: 2003-WH-11