Abstract
IT has been suggested that interaction terms in the potential functions for polyatomic molecules are derived from the changes in bond-hybridization which accompany the nuclear displacements1. The following considerations may be of some interest. In ethylene itself, the constant for interaction between the deformation of the terminal angles and the stretching of the C = C bond is not absolutely determinable, since the angles change simultaneously. Referring to the accompanying figure, suitable valence force co-ordinates for the class Ag vibrations are as follows:
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Torkington, P., Nature, 162, 370 (1948).
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TORKINGTON, P. Interaction Terms in the Potential Functions for Polyatomic Molecules. Nature 164, 186 (1949). https://doi.org/10.1038/164186a0
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DOI: https://doi.org/10.1038/164186a0
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