| Autor: |
Negru, Bogdan, Goncher, Scott J., Brunsvold, Amy L., Just, Gabriel M. P., Park, Dayoung, Neumark, Daniel M. |
| Předmět: |
|
| Zdroj: |
Journal of Chemical Physics; 8/21/2010, Vol. 133 Issue 7, p074302, 8p, 2 Diagrams, 8 Graphs |
| Abstrakt: |
Photofragment translational spectroscopy was used to study the photodissociation dynamics of the phenyl radical C6H5 at 248 and 193 nm. At 248 nm, the only dissociation products observed were from H atom loss, attributed primarily to H+o-C6H4 (ortho-benzyne). The observed translational energy distribution was consistent with statistical decay on the ground state surface. At 193 nm, dissociation to H+C6H4 and C4H3+C2H2 was observed. The C6H4 fragment can be either o-C6H4 or l-C6H4 resulting from decyclization of the phenyl ring. The C4H3+C2H2 products dominate over the two H loss channels. Attempts to reproduce the observed branching ratio by assuming ground state dynamics were unsuccessful. However, these calculations assumed that the C4H3 fragment was n-C4H3, and better agreement would be expected if the lower energy i-C4H3+C2H2 channel were included. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
