In:
The Journal of Chemical Physics, AIP Publishing, Vol. 133, No. 7 ( 2010-08-21)
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
0021-9606
,
1089-7690
Language:
English
Publisher:
AIP Publishing
Publication Date:
2010
detail.hit.zdb_id:
3113-6
detail.hit.zdb_id:
1473050-9
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