Investigation of the tautomerism and the intramolecular charge transfer in the series of aromatic N-oxides by electron spectroscopy

The electron spectra of functionally substituted N-oxides of pyridine and quinoline in different solvents have been analyzed. It is shown that the long-wave region of the spectra can be used to investigate the tautomeric forms and the resonance structures of these compounds with substituents which are directly conjugated with the N-oxide group.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1662–1669. December, 1993.