The title compound, C 6 H 5 NO 2 , a tautomer of 2-hydroxynicotinic acid, adopts a planar conformation. An intramolecular O-HÁ Á ÁO hydrogen bond of 2.504 (2) A ˚is found. The compound forms one-dimensional hydrogen-bonded chains along the [101] direction via an intermolecular N-HÁ Á ÁO hydrogen bon
Zwitterionic 3-carboxylatomethyl-3-carboxymethyl-2-oxo-2,3-dihydroimidazo[1,2-a]pyridin-1-ium
✍ Scribed by Qiao, Shu ;Yong, Guo-Ping ;Xie, Yu ;Wang, Zhi-Yong
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 191 KB
- Volume
- 62
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The title compound, C 11 H 10 N 2 O 5 , exists in the solid state as a carboxylate-imidazolium zwitterion. Intermolecular O-HÁ Á ÁO and N-HÁ Á ÁO hydrogen bonds link the molecules into two-dimensional layers.
📜 SIMILAR VOLUMES
Single-crystal X-ray study T = 90 K Mean (C-C) = 0.003 A R factor = 0.045 wR factor = 0.112 Data-to-parameter ratio = 15.6 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
The title compound, C 10 H 9 NO 3 S, crystallizes with two molecules in the asymmetric unit. The crystal packing is stabilized by van der Waals forces.
The title compound, C 14 H 13 NO 5 , exhibits a resonance-assisted hydrogen bond O-HÁ Á ÁO C [2.505 (4) A ˚], which leads to a lengthening of the carbonyl C O bond, a shortening of the C-OH bond and delocalization of the electron density within the dihydropyridine ring.
In the title compound, C~10~H~11~N~3~O~5~, the dihedral angle between the fused pyridine and imidazolidine ring planes is 4.88 (12)°. The crystal structure is stabilized by weak C—H...O intermolecular interactions.