Engert, J. M. and Dick, Bernhard (1996) The UV absorption spectrum of the phenyl radical isolated in solid argon. APPLIED PHYSICS B-LASERS AND OPTICS, 63 (5). pp. 531-535. ISSN 0946-2171, 1432-0649
Full text not available from this repository.Abstract
Phenyl radicals have been generated by photodecomposition of nitrosobenzene isolated in solid argon at 12 K. In this medium the origin of the first UV absorption band of nitrosobenzene corresponding to the S-0 --> S-2 transition Is found at 30260 cm(-1) Excitation with an excess energy of approximate to 2200 cm(-1) results in very efficient photodissociation. The fragments NO and phenyl are stable for many hours. Annealing of the sample above 35 K led to partial recombination and recovery of the absorption spectrum of nitrosobenzene. The UV spectrum of the phenyl radical was obtained in the wavenumber range 25000-45000 cm(-1), apparently without contamination by other species. It shows sharp lines at 25220, 33880, and 34820 cm(-1) and two broader maxima at 38360 and 41060 cm(-1). Of these only the line at 34820 cm(-1) had been assigned to the phenyl radical in earlier work. These data are compared to recent molecular orbital calculations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | KINETICS; PHOTOLYSIS; MATRIX; C6H5; HBR |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Bernhard Dick |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Jun 2023 09:12 |
| Last Modified: | 21 Jun 2023 09:12 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51360 |
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