Statistical and nonstatistical nonadiabatic photodissociation from the first excited state of the hydroxymethyl radical
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States)
Photodissociation of hydroxymethyl (H{sub 2}COD) from the first excited state, a Rydberg 3s state, can produce either H+HCOD or H{sub 2}CO+D. These processes involve a seam of conical intersections. An analysis of the seam is reported based on a pointwise determination of the three gradient vectors that characterize a conical intersection: the energy difference gradient and the coupling gradient, which span the branching space, and the gradient of the average energy. These data are used to understand why H, but not D is produced at energies near threshold, the difference in the recoil anisotropy for H and D dissociation, and whether H or D will be produced impulsively or after formation of an intermediate complex.
- OSTI ID:
- 20662310
- Journal Information:
- Journal of Chemical Physics, Vol. 122, Issue 8; Other Information: DOI: 10.1063/1.1850892; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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