The rigid molecule approximation in lattice dynamics
- 1 February 1977
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 33 (2) , 573-583
- https://doi.org/10.1080/00268977700100491
Abstract
The theory of the lattice dynamics of molecular crystals with and without the rigid molecule approximation is developed and the two compared. To make the two compatible, the equilibrium conditions for the internal molecular dimensions are replaced in the rigid molecule approximation by equations representing the constrained constant values of the molecular dimensions expanded in vibrational coordinates.Keywords
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