Abstract
The photodissociation of CF 3I at 248 nm was performed on our high-resolution photofragment translational spectrometer. For further improvement of the resolution, we have taken the following procedures: (1) Kr was used as carrier gas, (2) optimum molecular beam angle θ opt (when V MB⊥ V CM) was selected, (3) the longitudinal molecular beam angle spread was reduced, and (4) the ionization region for photofragments was diminished. The photofragment translational spectra of I * ( 2 P 1/2 ) reveal eight well-resolved vibrational peaks. The highest peak was assigned to be v 2=5 of the ν 2 vibrational mode, and then the dissociation energy would be D 0( C–I)=18 810±200 cm −1=53.8±0.6 kcal/mol.
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