Intermolecular modes of solid carbon disulphide

Publisher Website
Google Scholar
Abstract
The frequencies of particular intermolecular modes of vibration and libration in single crystals of solid carbon disulphide have been measured by coherent inelastic neutron and Raman scattering techniques 148K. Measurements were made at the special points in the Brillouin zone Gamma , S, R, Z, A, Q and Y and, including earlier infrared results, 37 of the 42 distinct frequencies at these points have been identified. Six of the ten dispersion curves along Lambda (001) have been measured and three dispersion curves have been outlined along Delta (100). Values of the elastic constants C11, C33, C44and C55have been determined from the acoustic branches. The present results are compared with calculations based on two different models for the interatomic potentials. Both models calculate the general level of the intermolecular frequencies to be too high and the bandwidth of the frequencies to be too large. Neither model can be considered an adequate description of the present results.

This publication has 9 references indexed in Scilit: