CH 2 ClCHFCl was photolyzed with a TEA CO 2 laser at 1033.5 cm− 1. The infrared multiphoton dissociation mechanism of CH 2 ClCHFCl was investigated under various conditions: Sample gas pressure, additive gas pressure, pulse number, pulse energy, and pulse duration. It is concluded that primary process of the IRMPD is direct elimination of molecular HCl and HF, HCl elimination being predominant channel. Primary HCl ...