IR multiple-photon dissociation of Br(CF2)4COI molecules by excitation via CO (1794 cm−1) stretching and skeleton (961 cm−1) vibrations

Dissociation of Br(CF2)4COI molecules resulting from infrared multiple-photon excitation (IR-MPE) by the second (via CO stretch) and the first (via skeleton vibrations) harmonics of TEA CO2 laser was studied. It was found that in the two cases of IR-MPE, dissociation occurs via two distinct channels with the formation of C2F4 and Br(CF2)4I molecules as final products. At the same time, the relative ratio of these final products was found to depend on the channel of molecular excitation.