Raman and far-infrared study of the lattice vibrations of methyl cyanide

Publication

Reference: Anderson A., Zeng W.~Y. (1986). Raman and far-infrared study of the lattice vibrations of methyl cyanide. J. Raman Spectrosc., 17, 447 - 451.

Names

Title: Raman and far-infrared study of the lattice vibrations of methyl cyanide
Abstract: Low-frequency Raman and far-infrared spectra of both solid phases of $CH_3CN$ and $CD_3CN$ at temperatures between 20 K and the melting point have been recorded. Assignment of the observed peaks as librations about the principal molecular axes or as translational modes is facilitated by finding the frequency ratios of corresponding peaks for $CH_3CN$ and $CD_3CN$. The spectra are compared with group theoretical predictions, based on possible space groups for each of the two phases. It is found that a unit cell with point group $C_{2h}$ and four molecules on general sites is favoured for phase I. The lattice spectra do not appear to be compatible with the larger unit cell proposed for phase II.
Keywords: spectroscopy, transmission spectra, Raman spectra, far-IR, band position, band vibration mode, ices, molecular solids, CH3CN, CH3DN
Content: spectral data, band list data, experimental physics

Doi

10.1002/jrs.1250170604

Identifiers