Intermolecular Interactions in 8-Aza-D-Homogonane Crystals and their Manifestation in the IR Spectra |
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| Authors: | A A Akhrem A A Govorova O V Gulyakevich A S Lyakhov A L Mikhal'chuk I V Skornyakov G B Tolstorozhev |
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| Institution: | (1) Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus;(2) Scientific-Research Institute of Physicochemical Problems, Belarusian State University, Minsk, Belarus;(3) Institute of Molecular and Atomic Physics, National Academy of Sciences of Belarus, 70 F. Skorina Ave., Minsk, 220072, Belarus |
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| Abstract: | Crystalline modifications of 8-aza-D-homogon-1,3,5(10),13-tetraen-12,17a-dione have been investigated by IR spectroscopy and x-ray structural analysis. It is shown that this compound crystallizes from solutions of chloroform with hexane in the form of a solvate comprised of chelate hydrogen bonds between the hydrogen atom of the chloroform molecule and the oxygen atoms of the carbonyl groups of the 8-azasteroid molecule. A relation between the changes in the characteristic absorption bands of the CH2-, C=O-, and I=C groups and the structure of the crystalline modifications has been established. |
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| Keywords: | 8-azasteroid IR spectrum x-ray structural analysis intermolecular interaction |
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