Abstract
The electronic absorption and emission spectra in the crystals, solutions, vapor, and ethanol-ether (77 °K) were investigated for the series of 2-(4-pyridyl)-5-aryl-substituted oxazoles at various temperatures. The conjugation between the rings of the system was investigated by mass spectrometry. The combination of spectral data shows that the configurations of such molecules both in the ground state and in the excited state depends substantially on the state of aggregation and on the temperature.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 407–412, March, 1986.
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Kurapov, P.B., Klyuev, N.A., Afanasiadi, L.S. et al. Configuration of 2-(4-pyridyl)-5-aryloxazole molecules in various states of aggregation. Chem Heterocycl Compd 22, 334–339 (1986). https://doi.org/10.1007/BF00515006
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DOI: https://doi.org/10.1007/BF00515006