Fermi resonance in dimers : a model study
- 1 December 1978
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 36 (6) , 1757-1767
- https://doi.org/10.1080/00268977800102741
Abstract
A theoretical model is proposed for symmetric dimers of carboxylic acids which accounts for three effects on an equal footing : (i) coupling between the high and low-frequency modes ; (ii) Davydov-type splitting of the degenerate vibrational states ; and (iii) Fermi resonance between the hydrogen-stretching fundamental and the first overtone of the hydrogen bending. These three mechanisms contribute to the infra-red spectra which have been computed for different values of an anharmonic parameter.Keywords
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