Calculations on the rate of photodissociation of hexafluoroacetone

The dissociation of hexafluoroacetone from high vibrational levels of its first excited singlet state is treated by the methods of RRKM unimolecular theory. Predictions of the relative photodissociation rates for various exciting wavelengths are in reasonable accord with the observed rates and indicate a critical predissociation energy of about 6 kcal/mole. The calculated temperature dependence is less satisfactory and somewhat lower than the experimental variation.