Analyse der Grundschwingungen von Phenanthren aus experimentellen Ergebnissen
Open Access
- 1 August 1967
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 22 (8) , 1247-1254
- https://doi.org/10.1515/zna-1967-0816
Abstract
A vibrational assignment of phenanthrene is proposed, which differs in some details from a previous paper. The infrared spectra of the gas, solution, KJ-pellet, single crystal in polarized light between 200 and 3200 cm-1, the dichroism of the infrared bands between 400 and 3200 cm-1 at the temperature of boiling nitrogen, the depolarisation ratios of the RAMAN bands and some infrared bands of mixed crystals (in fluorene and biphenyl) are analyzed. The infrared spectra of similar molecules (triphenylene, halogenphenanthrenes) contribute additional information in several cases. Nevertheless the inability of predicting the experimental dichroism of many B1-IR-bands by the oriented gas model and the weak intensities (therefore missing depolarisation ratios) of B1-RAMAN-bands lead yet to some uncertainties particularly for the B1-species.Keywords
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