The title compound, C 9 H 12 N 2 O 3 , was synthesized by the reaction in ethanol of ethane-1,2-diamine and 3-[bis(methylthio)methylene]-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2,4dione. Two intramolecular N-HÁ Á ÁO hydrogen bonds induce a high degree of planarity.
2-(2,6-Dimethyl-4H-pyran-4-ylidene)malononitrile
✍ Scribed by Fu, Xian-Shu ;Zhou, Miao-Jun ;Sun, Jun-Wei ;Xiao, Dan-Dan
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 150 KB
- Volume
- 62
- Category
- Article
- ISSN
- 1600-5368
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In the crystal structure of the title compound, C 12 H 13 N 3 O 2 S, weak intermolecular C-HÁ Á ÁO and N-HÁ Á ÁO hydrogenbond interactions link the molecules into a double chain along the b axis. In the title molecule, the plane of the pyrimidine ring makes an angle of 87.51 (5) with the plane of th
This work describes the first solid-state structural study of a cyclic enaminone derivative from Meldrum's acid, C 10 H 13 NO 4 . The packing shows an infinite linear chain along [111] mediated by dimeric N-HÁ Á ÁO and nonclassical C-HÁ Á ÁO hydrogen-bonding interactions.
In the title molecule, C 14 H 13 ClN 2 O 2 , all bond lengths and angles show normal values. The mean planes of the heterocyclic ring and the carbonyl group make a dihedral angle of 81.38 (5) .