Rotational band contour analysis of the à 1 A′-[Xtilde] 1 A′ electronic transitions in 1- and 2-chloronaphthalenes
- 1 October 1978
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 36 (4) , 1053-1059
- https://doi.org/10.1080/00268977800102161
Abstract
The high-resolution electronic bands of the à 1 A′-[Xtilde] 1 A′ absorption system of 2-chloro- and 1-chloronaphthalene have been analysed by the method of rotational band contours. The excited state rotational constants of 2-chloronaphthalene may be interpreted in terms of a planar geometry of the molecule in the excited state, but no such explanation seems possible for 1-chloronaphthalene. It is found that the perturbing effect of chlorine substitution on the 312 nm electronic transition of naphthalene is significantly different from that of F, OH and NH2.Keywords
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