Abstract
The infrared absorption spectrum of 3,5-dimethyl-4-phenylpyridine in the 400–2000 cm−1 range was obtained. A valence-force model was used to compute the fundamental frequencies and normal vibrational modes. The experimental and computed data were found to be in good agreement. The addition of two methyl groups in the 3,5-positions of theγ-phenylpyridine molecule reduces conjugation between the benzene and pyridine rings, rendering the molecule noncoplanar. The free rotation of the methyl groups about the C-C bond is retarded by the free electron pair in the nitrogen atom of the pyridine ring.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Ved Prakash Gupta and M.M. Kusakov, ZhPS,3, 438, 1965.
M. V. Vol'kenshtein, M. A. El'yashevich, and B.I. Stepanov, Molecular Vibrations [in Russian], Moscow, vol. 1, 1949.
L.A. Gribov and V. V. Zhogina, Opt. ispektr.,17, 832, 1964.
M. A. Kovner, Thesis: The Computation and Interpretation of the Vibrational Spectra of Benzene and Benzene Derivatives [in Russian], Minsk, 1957.
V.I. Berezin, Opt. ispektr.,15, 310, 1963.
M.A. Kovner and A.M. Bogomolov, Opt. ispektr.,4, 301, 1958.
P.P. Shorygin and E.M. Popov, DAN SSSR,146, 1132, 1962.
Rights and permissions
About this article
Cite this article
Gupta, V.P., Kusakov, M.M. An experimental study and computation of the infrared absorption spectrum of 3,5-dimethyl-4-phenylpyridine. J Appl Spectrosc 5, 387–390 (1966). https://doi.org/10.1007/BF01132719
Issue Date:
DOI: https://doi.org/10.1007/BF01132719