Abstract
A study of the experimental and theoretical spectra of ethionamide and prothionamide molecules shows that absorption at a wavelength of 292 ± 1 nm corresponds to an electron transition between occupied and vacant p-orbitals of the C=N double bond in the structure of pyridine, while absorption at 222 ± 1 nm corresponds to a transition between the occupied and vacant p-orbitals of the С=С bond in the structure of pyridine, and to a transition between the occupied and vacant p-orbitals of the С=S chromophore.
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Original Russian Text © E.A. Illarionova, A.I. Illarionov, O.L. Nikonovich, 2017, published in Izvestiya Rossiiskoi Akademii Nauk, Seriya Fizicheskaya, 2017, Vol. 81, No. 10, pp. 1414–1418.
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Illarionova, E.A., Illarionov, A.I. & Nikonovich, O.L. Nature of the optical properties of ethionamide and prothionamide in the ultraviolet region of the spectrum. Bull. Russ. Acad. Sci. Phys. 81, 1273–1277 (2017). https://doi.org/10.3103/S1062873817100148
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DOI: https://doi.org/10.3103/S1062873817100148