We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Excursion, Roaming and Migration of Hydrogen Atom during Dissociation of Formaldehyde.
- Authors
Hyung-Rae Kim
- Abstract
Several interesting features in trajectory were observed in the direct dynamics study of formaldehyde dissociation above radical dissociation limit. The hydrogen atom deliberately placed on the radical dissociation path can turn around at some distance from C without completion of dissociation and return to HCO moiety, colliding with it just as in a radical-radical recombination and producing a highly energized molecule. Excursion of a hydrogen atom to a distance of 6-8 bohrs and migration of a hydrogen atom back and forth between C and O are two of the most interesting features exhibited by the energized molecule. A series of excursions is seen to lead to a different kind of dissociation resembling roaming-like dissociation characterized by high vibrational excitation of H2 fragment. It is suggested that excursion occurs due to involvement of two different force field systems that exhibit discontinuity in 6-8 bohrs from HCO moiety. We argue that roaming is a non-zero impact parameter version of the excursion.
- Subjects
FORMALDEHYDE; HYDROGEN atom; HYDROGEN; DISSOCIATION (Chemistry); MOLECULAR force constants
- Publication
Bulletin of the Korean Chemical Society, 2014, Vol 35, Issue 5, p1285
- ISSN
0253-2964
- Publication type
Article
- DOI
10.5012/bkcs.2014.35.5.1285