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Associative structure and vibrational spectra of polar organic compounds in the liquid state at various temperatures

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Abstract

This paper proposes a theoretical model that explains how local dipole-dipole intermolecular interactions affect the parameters of the vibrational spectra of polar organic compounds. The model is used as a basis for estimating the frequency shifts as the substance goes from the vapor state to the liquid state. Starting from the observed displacements, data are obtained on the degree of mutual orientation of the molecules at various temperatures, as well as on the orientational broadening of the spectral lines. Conclusions are reached concerning the possible structure of the liquids investigated here.

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