Abstract
We report the laser excitation and dispersed fluorescence spectra of the Ã2E ←X̃2A1transition of the jet-cooled MgCH3radical. Improvements to the experiment have allowed the observation of 610and 210vibronic features not previously observed. Analyses of these bands, along with the previously reported 000spectra, yield the rotational constants and values of the Coriolis and the spin–orbit coupling constants for the radical's Ã2E state. We also are able to rather completely characterize a small, dynamic Jahn–Teller effect. The dispersed fluorescence spectrum was analyzed and all observedX̃2A1state vibrational features were assigned.
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