1-Ethyl-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid
Autor: | Lyudmila V. Sidorenko, Igor V. Ukrainets, Svetlana V. Shishkina, Abdel Naser Dakkah, Oleg V. Shishkin |
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Rok vydání: | 2002 |
Předmět: | |
Zdroj: | Acta Crystallographica Section E Structure Reports Online. 58:o254-o256 |
ISSN: | 1600-5368 |
DOI: | 10.1107/s1600536801021857 |
Popis: | An X-ray diffraction study of the title compound, C12H11NO4, has shown that this compound exists in the crystal as the 2-oxo-4-hydroxy tautomer. The formation of two O—H⋯O=C-type intramolecular hydrogen bonds leads to the elongation of both exocyclic and carboxylic C=O double bonds involved in the hydrogen bonding, causes shortening of the exocyclic C—O single bond, and also affects the C—C bond lengths in the dihydropyridine ring. |
Databáze: | OpenAIRE |
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