Competing pathways in the infrared multiphoton dissociation of hexafluoropropene
- Lawrence Berkeley Lab., CA (United States)
- Inst. of Atomic and Molecular Sciences, Taipei (Taiwan, Province of China)
The infrared multiphoton dissociation of hexafluoropropene was studied by photofragment translational spectroscopy. Two primary channels and one secondary channel were identified. The predominant primary channel produces CF{sub 3}CF or C{sub 2}F{sub 4} and CF{sub 2}, with the heavier species undergoing further dissociation to two CF{sub 2} fragments. A number of dissociation mechanisms are proposed for the elimination of CF{sub 2}, including direct cleavage of the carbon-carbon double bond. In the second primary channel, a simple bond rupture reaction produces CF{sub 3} and C{sub 2}F{sub 3}. As expected, the translational energy distribution for this channel peaks near zero, indicating no exit barrier is present. The activation energy for this simple bond rupture is estimated to be 100-105 kcal/mol. The branching ratio, [CF{sub 2}]/[CF{sub 3}], between the two primary pathways is 4.0 {+-} 1.0. 38 refs., 7 figs., 1 tab.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 502011
- Journal Information:
- Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory, Journal Name: Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory Journal Issue: 4 Vol. 101; ISSN 1089-5639; ISSN JPCAFH
- Country of Publication:
- United States
- Language:
- English
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