4-(Dimethylamino)pyridinium 2-butoxy-3-dicyanomethylene-4-oxocyclobut-1-en-1-olate
✍ Scribed by Zubatyuk, Roman I. ;Baumer, Vyacheslav N. ;Tatarets, Anatoliy L. ;Patsenker, Leonid D. ;Shishkin, Oleg V.
- Publisher
- International Union of Crystallography
- Year
- 2004
- Tongue
- English
- Weight
- 219 KB
- Volume
- 60
- Category
- Article
- ISSN
- 1600-5368
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📜 SIMILAR VOLUMES
In the title molecule, C 24 H 20 N 2 O 5 , the cyclohexene ring adopts a half-chair conformation. The molecular structure shows some intra-and intermolecular hydrogen bonds.
The molecule of the title compound, C 20 H 10 N 2 , displays no imposed symmetry, but is largely planar [one phenyl ring is twisted by 10.4 (1) out of the plane of the rest of the molecule]. The central C C bond length is 1.371 (3) A Ê . The molecules are linked by a weak hydrogen bond of the form C
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.003 A Ê R factor = 0.056 wR factor = 0.162 Data-to-parameter ratio = 12.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
In the title molecule, C 18 H 18 O 5 , the cyclohexene ring adopts an envelope conformation. The dihedral angle between the two furan rings is 65.9 (1) . In the crystal structure, the carboxyl groups of inversion-related moleules are involved in the formation of dimers through OÐHÁ Á ÁO hydrogen bon