Raman Spectra of Solid CO_2, N_2O, N_2, and CO

Publication

Reference: Cahill J.~E., Leroi G.~E. (1969). Raman Spectra of Solid CO $_2$ , N $_2$ O, N $_2$ , and CO. J. Chem. Phys., 51, 1324 - 1332.

Names

Title: Raman Spectra of Solid CO $_2$ , N $_2$ O, N $_2$ , and CO
Abstract: The Raman spectra of solid CO $_2$ , N $_2$ O, N $_2$ , and CO have been observed. Each spectrum can be analyzed by assuming an approximately ordered structure isomorphous with that of CO $_2$ . The lattice mode intensities have been calculated on the basis of the oriented gas model; they are in good agreement with the measured values and lead to confident assignments of the observed bands. The frequencies of the E $_g$ and two T $_g$ librations are 73.5, 91.5, and 132 cm $^-1$ , respectively, for CO $_2$ (15\textdegreeK) and 68, 82, and 124 $_.5$ cm $^-1$ , respectively, for N $_2$ O (15\textdegreeK). In \ensuremathα-N $_2$ at 16\textdegreeK two sharp bands are observed at 33.5 cm $^-1$ (E $_g$ ) and 37.5 cm $^-1$ (T $_g$ ). The other T $_g$ mode may coincide with the E $_g$ . Only one broad, asymmetric lattice band is observed for \ensuremathα-CO, which is located at 47.5 cm $^-1$ at 12\textdegreeK. The peak frequencies of these bands decrease an average of \ensuremath\sim 15% on warming from 15\textdegreeK to the phase transition, and there is a considerable concommitant increase in their widths.
Keywords: spectroscopy, Raman, far-IR, ices, molecular solids, CO2, N2O, CO, N2
Content: spectral data

Doi

10.1063/1.1672177

Identifiers