VIBRATIONAL ANHARMONICITY OF $SF_{6}$ IN CRYOGENIC SOLUTION
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Date
1981
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Ohio State University
Abstract
The infrared spectrum of $SF_{6}$ has been recorded in liquid $oxygen^{1}$ and liquid $argon^{2}$ solutions. The suppression of rotational structure and the elimination of hot bands at low temperature give estimates of band origins that could only be achieved in the gas phase by detailed high-resolution analyses of each hand. A normal coordinate anharmonic force field has been fitted directly to fundamental, overtone and combination bands of the cryogenic solution spectra. It will be shown that at least for $\nu_{3}$ the derived anharmonic constants are in good agreement with those obtained from gas phase data (and force fields based upon gas phase data), despite appreciable shifts in the fundamentals from gas to cryogenic solution.
Description
$^{1}$ V.V. Bertsev, T.D. Kolomiitseva, and N.M. Tsyganenko, Opt. Spectrosc. 37, 263 (1974). $^{2}$ S.R.J. Brueck, to be published. Experimental work supported by the Department of the Air Force.
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