Solid-state IR-LD spectroscopy of codeine and N-norcodeine derivatives |
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| Authors: | Rumyana Bakalska Bojidarka Ivanova Tsonko Kolev |
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| Institution: | (1) Department of Organic Chemistry, University of Plovdiv, 4000 Plovdiv, Bulgaria;(2) Department of Analytical Chemistry, Faculty of Chemistry, Sofia University “St. Kl. Ohridki”, 1164 Sofia, Bulgaria;(3) Institute of Organic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria |
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| Abstract: | Linear-dichroic infrared spectra (IR-LD) of 3-ethoxy-4-(N-norcodeino-)cyclobutene-1,2-dione (1) and codeine dihydrogenphosphate
(Codeinum phosphoricum) (2), oriented as solid suspensions in nematic liquid crystals, have been measured. IR characteristic band assignments were made,
and used in stereo-structural predictions. The results were compared with crystallographic structures of similar organic systems,
and found to be in good agreement. |
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| Keywords: | 3-ethoxy-4-(N-norcodeino-)-cyclobutene-1 2-dione codeine dihydrogenphosphate IR-LD spectroscopy |
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