| Abstract: | The CF2 absorption spectrum between 2700 and 2250 Å and its fluorescence spectrum excited by radiation near 2500 Å have been observed in matrix isolation experiments. The positions of the absorption bands are somewhat dependent on the environment in which the CF2 molecule is trapped. The absorption spectrum can be explained in terms of a progression in the upper-state bending fundamental, with a band spacing of 499 cm−1, and the fluorescence spectrum involves a progression in the ground-state bending fundamental, with a band spacing of 657 cm−1. A significant deviation between the calculated and observed separation of any given absorption and emission band can be explained by considering the effect of phonon interactions. Arguments are presented suggesting that the band origin lies near 36 900 cm−1 for CF2 produced by the photolysis of CF2N2 in an argon matrix. |
