Abstract
Laser-induced fluorescence (LIF) excitation spectrum for gas-phase dichlorocarbene (CCl 2) cooled in a supersonic free jet has been observed in the wavelength range of 497–517 nm. The K-structure was clearly resolved. About 80 subbands were assigned to ( v 1, v 2 0)←(0, 0, 0) vibronic transitions. The vibrational frequencies of ν′ 1=643.5 cm −1, ν′ 2=308,0 cm −1 and their anharmonic constants were obtained. Furthermore, the rotational data A′− B′=3.67 cm −1, A″− B″=1.80 cm −1 were deduced from the spectral analysis.
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