Non-planar (C2) structure of phthalan from fluorescence spectroscopy in a supersonic jet
โ Scribed by Karim H. Hassan; J.Michael Hollas
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 425 KB
- Volume
- 169
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Phthalan has been shown, previously, from the observation of far-infrared puckering transitions, to have a planar skeleton in respect to this puckering motion in the S, electronic state. Supersonic jet fluorescence spectra show, however, that the 1,3-carbon atoms are twisted out-of-plane in a Cz configuration with a 137 cm-' barrier to planarity.
๐ SIMILAR VOLUMES
The single rovibronic level (SRVL) fluor~nce spectra of the E band of SO, in a supemonic fiti jet have been measured. It was found that the forbidden transition observed in the fluorescence spectra is induced by a c-axis Coriolis interaction in the excited state
High resolution infrared spectra of the n 5 and n 10 bands of C 2 F 6 in a supersonic jet have been measured using a diode laser spectrometer. The well resolved vibration-rotation lines of these two bands were obtained. The spectra were analyzed using a standard Hamiltonian for a prolate symmetric r
Single vibronic level fluorescence spectra of tram-2-fluorostyrene have been observed in a supersonic jet. Levels of the C( 1 )-C(a) torsional vibration up to u= 8 are fitted to a potential function which shows that the molecule is quasi-planar with a barrier of I 5 k 4 cm-' .