Journal of Chemical Physics, Vol.109, No.9, 3474-3484, 1998
Intermolecular V-V energy transfer in the photodissociation of CO2-HF(v=1)
Photofragment final state distributions have been measured for the vibrational predissociation of CO2-HF corresponding to excitation of the H-F stretching vibration. The method used in these studies combines photofragment translational spectroscopy, pendular state orientation methods, and laser probing to provide distributions that include the interfragment state correlations. The results clearly show that the dominant dissociation channel involves intermolecular V- V energy transfer corresponding primarily to excitation of the asymmetric stretching vibration of the CO2 fragment. The dissociation energy of the complex has also been determined to be 672 +/- 4 cm(-1).
Keywords:WEAKLY-BOUND COMPLEXES;PHOTOFRAGMENT ANGULAR-DISTRIBUTIONS;TO-STATE PHOTODISSOCIATION;HYDROGEN-FLUORIDE DIMER;VIBRATIONAL PREDISSOCIATION;VANDERWAALS COMPLEXES;ABSORPTION-SPECTROSCOPY;TEMPERATURE-DEPENDENCE;MOLECULAR-COMPLEXES;VECTOR CORRELATIONS