Lattice Vibrations and Elastic Constants of Molecular Crystals in the Pair Potential Approximation
- 15 February 1968
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 48 (4), 1438-1444
- https://doi.org/10.1063/1.1668859
Abstract
Expressions for lattice vibration frequencies and elastic constants of molecular crystals are developed assuming that the molecules are rigid and that the potential energy is a sum of interactions between pairs of molecules. The theory is used to calculate the elastic constants of solid carbon dioxide and the results compared with available experimental data.Keywords
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