화학공학소재연구정보센터
Journal of Physical Chemistry A, Vol.103, No.25, 4791-4797, 1999
State-to-state vibrational predissociation dynamics of the acetylene-HCl complex
Photofragment translational spectroscopy has been implemented to obtain correlated final state distributions for the acetylene-HCl complex. Vibrational predissociation is induced by exciting the asymmetric acetylene C-H stretching vibration. In contrast with previous studies of this system, which suggested that the primary dissociation channel involves intermolecular V-V energy transfer (resulting in the production of upsilon = 1 HCl), the present study shows that the dominant channel involves intramolecular V-V energy transfer, with the majority of the excess energy remaining with the acetylene subunit. In fact, the dissociation energy determined in the present study, D-0 = 830 +/- 6 cm(-1), indicates that the HCl (upsilon = 1) channel is closed.