ROVIBRATIONAL SPECTROSCOPY AND MOLECULAR DYNAMICS OF Ar-HBr
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Date
1996
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Publisher
Ohio State University
Abstract
High resolution rovibrational spectra of several bands associated with the $\nu_{1}$ (HBr stretch) of both $Ar-H^{79}Br$ and $Ar-H^{81}Br$ isotopomers have been recorded using a tunable infrared diode laser supersonic jet spectrometer. In addition to the $\nu_{2}$ fundamental, the combination bands $\nu_{1} + 2\nu_{2}^{0}$, $\nu_{1} + \nu_{2}^{1}$, $\nu_{1} + v_{3}. v_{1} + 2v_{2}^{0} + v_{3}$, the hot band band $\nu_{1} + 2\nu_{2}^{0} 2\nu_{2}^{0}$, and the difference band $\nu_{1} - 2\nu_{2}^{0}$ were observed and analyzed. Nuclear quadrupole splittings have been partially resolved in Q branch transitions of the $\nu_{1} + v_{2}^{1}$ band. A strong Coriolis perturbation between the $\nu_{1} + v_{2}^{1}$ and $\nu_{1} +v_{3}$ was observed and analyzed. These results have been incorporated to determine an improved H4 intermolecular potential for Ar-HBr. In addition, the intermolecular potential surface for the Ar-HBr with HBr in its v = 1 state has also been modeled based on the experimental results of this work.
Description
Author Institution: Department of Chemistry, Teras A and M University