VIBRATIONAL SPECTRA OF FIVE PHASES OF SOLID HI
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Date
1964
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Ohio State University
Abstract
The infrared spectra of solid HI and DI as well as mixtures of the two have been reinvestigated in the temperature range $4^{\circ}$ to $78^{\circ} K$. Previously unreported transitions have been found indicating two new regions of thermodynamic stability making a total of five different structures in this temperature range. Marked differences in vibrational spectra in the fundamental region are exhibited. The lowest temperature phase gives a spectrum entirely similar to those of HBr and $HCl^{1}$ in their low-temperature phases. This is consistent with the $observation^{2}$ that the far infrared spectra of HCl, HBr, and HI at $4^{\circ} K$ are analogous and that all three have the same structure at low temperature.
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Author Institution: Department of Chemistry, The Johns Hopkins University
$^{1}$ D. F. Hornig and G. L. Hiebert, J. Chem. Phys., 27, 752 (1957). $^{2}$ D. W. Robinson, Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, Pittsburgh, Pa., March, 1964, paper no. 104.
$^{1}$ D. F. Hornig and G. L. Hiebert, J. Chem. Phys., 27, 752 (1957). $^{2}$ D. W. Robinson, Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, Pittsburgh, Pa., March, 1964, paper no. 104.