Conclusions
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1.
A linear relationship has been obtained between the integral intensity of the IR absorption band corresponding to valence vibrations, and the electronic charges of the bonds. This relationship is obeyed for vibrations of similar mode and frequency.
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2.
For the methyl halides CH3X and CD3X (X=CI, Br, I) and the alkyl groups CH3, CH2, and CH a linear dependence was found between the square root of the intensity and the electronic charge of the CH or CD bond.
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Literature cited
M. V. Vol'kenshtein, M. A. El'yashevich, and B. I. Stepanov, Molecular Vibrations [in Russian], Vol. 2, Gostekhteoretizdat, Moscow-Leningrad (1949).
L. A. Gribov, Theory of Intensity of Infrared Spectra of Multiatomic Molecules [in Russian], Izd-vo AN SSSR (1963), p. 96.
G. V. Bykov, Electronic Charges of Bonds in Organic Compounds [in Russian], Izd-vo AN SSSR (1960).
G. V. Bykov, Zh. Fiz. Khim.,33, 422 (1959);43, 568 (1969).
L. A. Gribov and V. N. Smirnov, Usp. Fiz. Nauk,75, 527 (1961).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2119–2121, September, 1970.
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Bykov, G.V. Electronic charges of CH bonds and the integral intensities of their absorption bands in the infrared spectrum. Russ Chem Bull 19, 1993–1995 (1970). https://doi.org/10.1007/BF00849789
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DOI: https://doi.org/10.1007/BF00849789