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| Item type: | Article | ||||
|---|---|---|---|---|---|
| Journal or Publication Title: | Journal of Physical Chemistry | ||||
| Volume: | 100 | ||||
| Number of Issue or Book Chapter: | 29 | ||||
| Page Range: | pp. 11883-11892 | ||||
| Date: | 1996 | ||||
| Additional Information (public): | CAN 125:70526 73-4 Optical, Electron, and Mass Spectroscopy and Other Related Properties 2396-01-2 (Phenyl radical); 10102-43-9 (Nitric oxide) Role: FMU (Formation, unclassified), FORM (Formation, nonpreparative) (formation in photolysis of nitrosobenzene); 586-96-9 (Nitrosobenzene) Role: PRP (Properties), RCT (Reactant), RACT (Reactant or reagent) (visible and near UV absorption spectrum and photolysis of argon solid-isolated); 7440-37-1 (Argon) Role: NUU (Other use, unclassified), USES (Uses) (visible and near UV absorption spectrum of nitrosobenzene isolated in solid) | ||||
| Institutions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Bernhard Dick Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Alkwin Slenczka | ||||
| Identification Number: |
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| Keywords: | Electronic structure (of nitrosobenzene); Ultraviolet and visible spectra (of nitrosobenzene isolated in solid argon); Ultraviolet and visible spectra (near-UV, of nitrosobenzene isolated in solid argon); Bleaching (photochem., of nitrosobenzene); Energy level transition (radiative, lifetimes, of nitrosobenzene); nitrosobenzene solid argon UV electronic structure | ||||
| Dewey Decimal Classification: | 500 Science > 540 Chemistry & allied sciences | ||||
| Status: | Published | ||||
| Refereed: | Yes, this version has been refereed | ||||
| Created at the University of Regensburg: | Yes | ||||
| Item ID: | 5536 |
Abstract
The absorption spectrum of nitrosobenzene isolated in solid Ar was studied up to an energy of 45,000 cm-1. In this medium a previously unreported vibrational structure could be resolved for the 1st UV band with origin at 30,260 cm-1. This band is assigned to the S0 -> S2 transition. After numerical resoln. enhancement with the max. entropy method this vibrational structure could be analyzed in ...
Abstract
The absorption spectrum of nitrosobenzene isolated in solid Ar was studied up to an energy of 45,000 cm-1. In this medium a previously unreported vibrational structure could be resolved for the 1st UV band with origin at 30,260 cm-1. This band is assigned to the S0 -> S2 transition. After numerical resoln. enhancement with the max. entropy method this vibrational structure could be analyzed in terms of progressions and combinations of 5 modes. Line shape anal. of the origin band reveals a superposition of Lorentzian lines with a width of 64 cm-1, corresponding to a lifetime of the upper electronic state t(S2) ~ 80 fs. The lines are either matrix sites or due to a low-frequency mode. Attempts of spectral hole burning at the electronic origin lead to partial bleaching of the spectrum, which is reversible on a time scale of 20 min. Excitation with an excess energy of 2200 cm-1 leads to fragmentation into NO and a Ph radical, which recombine only after annealing of the matrix >30 K.
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