A Vibrational Analysis of the Fluorescence of Naphthalene Vapor
- 1 September 1952
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 20 (9) , 1375-1383
- https://doi.org/10.1063/1.1700765
Abstract
The fluorescence spectrum of naphthalene vapor has been photographed and found, under suitable conditions, to consist of a number of discrete bands. Thirty‐nine bands were measured and a vibrational analysis was carried out making use of assignments of infrared and Raman fundamentals. The analysis indicates that the transition observed is forbidden by symmetry and made weakly allowed by a molecular vibration of frequency 478 cm−1 belonging to the representation b2u. This indicates that the wave function of the lowest excited singlet state of naphthalene belongs to the irreducible representation Ag or B1g of the point group D2h.Keywords
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