Abstract
Abstract In this paper we attempt to reproduce quantitatively the IR spectra of 2-mercaptoquinoline in the ν NH and ν ND band frequency regions. The investigated spectra were quantitatively interpreted within the limits of the “strong-coupling” theory for the hydrogen bond vibrations in centrosymmetric H-bonded dimers, including the observed isotopic effect. The observed, very nonregular, spectral properties of 2-mercaptoquinoline were found to be connected with the “strong-coupling” mechanism as well as with the electronic properties of the H-bonds in the molecular associates.
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