Ultraviolet photodissociation

Ultraviolet Photodissociation Studies of Organosulfur Molecules and Radicals Energetics, Structure Identification, and Internal State Distribution (Cheuk-Yiu Ng). 

Brouaxd, M., Martinez, M.T., Milne, C.J., Simons, J.P., and Wang, J.-X. (1990). Near threshold stereo-dynamics of molecular photodissociation The visible and near ultraviolet photodissociation of H2O2, Chem. Phys. Lett. 165, 423-428. 

It is also possible to use localized electronic excitation to promote reactions selectively. An example studied by Laurie Butler and coworkers is the ultraviolet photodissociation of CH2lBr. This molecule has absorption maxima at 270, 215, and 190 nm, corresponding to localized excitation of a nonbonding iodine electron to an antibonding orbital localized on the C-I bond, ( i pro-... 

To focus the review, it is necessary to pass over some topics which are timely, relevant, and could be included were it not for space limitations. One of these is the area of electron photodetachment as applied to the study of the Franck-Condon region of the neutral PES accessed from the corresponding anion. This approach has been shown to provide information about the transition state region of several bimolecular reactions. This work was pioneered by Neumark and coworkers and an excellent review is already available (Manolopoulos et al. 1993 Neumark 1992). Another noteworthy area is state-to-state studies of vibrational predissociation in weakly bound complexes. Miller and coworkers have made impressive advances in which fully state and angle-resolved product distributions have been obtained (Bemish et al. 1994 Block et al. 1992 Bohac et al. 1986, 1992a,b Bohac and Miller 1993a,b Dayton et al. 1989), and these results have been used to bring theory and experiment into accord. The present review is limited to cases in which ultraviolet photodissociation of a complexed moiety initiates reaction. 

Regan, P.M., Ascenzi, D., Brown, A., Balint-Kurti. G,G. and Orr-Ewing, A,J, (2000) Ultraviolet photodissociation of HCl in selected ro ibrational states Experiment and theory, J. Chern. Phys. 112. 10259-10268. 

---