Vibrational intensities VI: ethylene and its deutero-isotopes
Golike, R. C., Mills, I., Person, W. B. and Crawford Jnr., B. (1956) Vibrational intensities VI: ethylene and its deutero-isotopes. The Journal of Chemical Physics, 25 (6). pp. 1266-1275. ISSN 0021-9606
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To link to this article DOI: 10.1063/1.1743191
Absolute intensity measurements have been made on the fundamental vibrations of ethylene and four of its deuteroisotopes. The bands were pressure broadened with nitrogen at 50 atmos, and the intensities were determined by the method of Wilson and Wells except that the observed optical density was integrated against logv rather than v. Normal coordinates have been calculated, and the intensities have been interpreted in terms of quantities (∂p/∂Si) giving the change in dipole moment with respect to each internal symmetry coordinate. Data from the different isotopic species have been used to eliminate ambiguities in the interpretation. Effective bond moments are calculated for each symmetry coordinate.
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