Time resolved measurement of CF2 formation in the infrared multiphoton dissociation of CF2HCl

Abstract
The infrared multiphoton dissociation of CF2HCl is investigated by monitoring the appearance of the CF2 product in real time during and after the laser pulse. The difluorocarbene radicals are detected quantitatively by their optical absorption in the ? 1B1←? 1A1 band system around 250 nm. The fragmentation is studied under collision‐free conditions as well as in the presence of up to 500 Torr Ar.