Photodissociation of C 2F 4 at 193.3 nm; the production of triplet CF 2( 3B 1)

Abstract

The combination of photofragment translational spectroscopy data and the emission spectrum of nascent photoproducts shows that photodissociation of C 2F 4 at 193.3 nm can follow two decomposition pathways, both involving breakage of the CC double bond. One channel leads to two ground-state singlet CF 2( 1A 1) products, while the other channel correlates with formation of one ground-state singlet CF 2( 1A 1) fragment and one excited-state triplet CF 2( 3B 1) fragment. The angular dependence of the photodissociation products with respect to the laser polarization direction indicates that the transition dipole moment is aligned perpendicular to the CC bond.