THE MATRIX ISOLATION SPECTRA OF $H_{2} S$ AND $D_{2}S$: AN EXAMPLE OF THE APPLICATION OF THE UNCOUPLED OSCILLATOR APPROXIMATION
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Date
1970
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Ohio State University
Abstract
Although the vibration-rotation spectra of $H_{2} S$ and $D_{2} S$ have been the object of extensive study, the assignment of the $v_{3}$ mode has never been observed in the gas phase. The matrix spectra reported here are analyzed in terms of the uncoupled oscillator approximation. This approach offers several advantages: 1) A separate eigenvalue equation can be written for each vibrational frequency. 2) Simple, geometry-independent, expressions relate the force constants to the isotopic shifts. 3) The frequency shift caused by the matrix cancels from the force constant calculation. 4) The neglect of anharmonicity is easy to assess.
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Author Institution: Institute for Atomic Research and Department of Chemistry, Iowa State University