Masaru FUKUSHIMA (Hiroshima City Univ.), Kazuhito SAITO (Idemitsu Kosan Co. Ltd.) and Kinichi OBI (Tokyo Inst. Tech. and IMS)
[J. Mol Spectrosc. 180, 389 (1996)]
We have generated the p-cyanobenzyl radical in supersonic free expansion, and measured the vibronically and rotationally resolved laser induced fluorescence excitation and dispersed spectra from single vibronic levels in green-blue region. The lowest energy band at 20738 cm-1 with the strongest intensity in the excitation spectrum has been assigned to the 000 band of the visible spectrum from the vibronic structures in the dispersed spectra. Based on the band type of the 000 band, a-type, determined from the rotationally resolved excitation spectrum, we have definitely assigned the visible band to the D1 22B1 - D012B1 transition. The vibronic structure of the D2 22B1 - D0 12D1 transition of the benzyl type is characterized by totally symmetric fundamental modes, 1, 8a and 9a.