3-[(1-Benzylamino)ethylidene]-2H-chromene-2,4(3H)-dione
✍ Scribed by Małecka, Magdalena ;Budzisz, Elżbieta
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 102 KB
- Volume
- 62
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The molecule of the title compound, C 18 H 15 NO 3 , adopts the keto-amine tautomeric form, with strong intramolecular N-HÁ Á ÁO hydrogen bonds classified as resonance-assisted hydrogen bonds (RAHBs). In the crystal structure, the molecules are stabilized by C-HÁ Á ÁO, C-HÁ Á Á andinteractions, forming rings and chains.
📜 SIMILAR VOLUMES
The structure of (I), with displacement ellipsoids for non-H atoms drawn at the 30% probability level.
The title compound, C 22 H 19 NO 3 , was synthesized by the reaction of 1-naphthol with ethyl cyanoacetate and benzaldehyde in ethanol under microwave irradiation. In the crystal structure, weak intermolecular N-HÁ Á ÁO hydrogen bonds link the molecules into centrosymmetric dimers, which are held to
The crystal structure of the title compound, C 19 H 19 N 3 O 2 , shows the molecule to be essentially planar with the exception of the terminal phenyl group. Molecules are associated via intermolecular C-HÁ Á ÁO hydrogen bonds.
The title compound, C 18 H 18 NO 5 P, adopts the keto-amine tautomeric form, forming an intramolecular N-HÁ Á ÁO hydrogen bond. The oxaphosphinine ring has a screw-boat conformation. The molecules are linked by O-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds and by astacking interaction.