Abstract
THE suggestion has been made by one of us that the vibration spectrum of tetrachlorothylene cannot be interpreted properly by a potential function involving only four or even seven force constants1. By considering the physical meaning of the ‘cross-terms’, a potential function was chosen the expression for which contained thirteen force constants, the values of which were determined from experimental data. the prediction was made that two fundamental frequencies, of symmetries A 1 and A 2 respectively, occur in the far infrared, at 400 cm.−1 and 346 cm.−1.
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References
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DUCHESNE, J., PARODI, M. Structure of the Tetrachlorethylene Molecule. Nature 144, 382 (1939). https://doi.org/10.1038/144382a0
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DOI: https://doi.org/10.1038/144382a0
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