Algebraic description of anharmonic stretching vibrations

Details Algebraic description of anharmonic stretching vibrations Algebraic description of anharmonic stretching vibrations

1999-04-12

arxiv.org/abs/physics/9904021v1

J. Mole. Spect. 195 (1999) 132

Physics

Chemical Physics

Scientific paper

10.1006/jmsp.1999.7811

A U(2) algebraic model is presented to describe stretching vibrations of XY$_n$ (n=2, 3, and 4) systems, where anharmonic interactions between the bond modes are considered. This model in a limit corresponds to an anharmonically coupled local mode model. As an example, the model for a molecule XY$_4$ is applied to recently observed spectra of methane in both gas and liquid phases, and the results obtained are in good agreement with the experiments.

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