Influence of structural factors on infrared spectra of some heterocyclic compounds

The article presents studies on influence of structural factors on infrared spectra of some heterocyclic compounds. Therefore, the effect of new structural elements (N, O atoms, as well as radicals) introduced into the pyrrole ring on infrared spectra of heterocyclic compounds of azole series has been studied. It has been shown that introduced structural elements affect the redistribution of electron cloud of cycle as a whole and its fragments in particular. The reason for the changes in spectral characteristics of studied compounds is associated with a change in electron density of vibrating group. (author)