Resonance enhanced multiphoton ionization spectroscopy of CHCl2 and CDCl2

Resonance enhanced multiphoton ionization spectra between 355 and 375 nm of CHCl2 and CDCl2 radicals are reported. The origin of the observed spectra was at 370.1 nm for CHCl2 and 370.4 nm for CDCl2. The REMPI mechanism is determined to be a 2 + 1 photon absorption, with the resonant intermediate state tentatively assigned as a 3d Rydberg state. Vibrational structure originated from activity in the C-Cl symmetric stretching and the out-of-plane bending modes. The C-Cl symmetric stretch frequencies are 845 cm-1 in CHCl2 and 814 cm-1 in CDCl2