The title compound, C 21 H 22 O 5 , a derivative of the antioxidant, anti-inflammatory compound curcumin, crystallizes with two molecules (A and B) in the asymmetric unit. The mean planes of the two 3,4-dimethoxyphenyl groups in A and B make dihedral angles of 57.9 (7) and 33.4 (3) . An extensive ne
1,5-Bis(3,4,5-trimethoxyphenyl)penta-1,4-dien-3-one 1.333-hydrate–1,5-bis(3-bromo-4,5-dimethoxyphenyl)penta-1,4-dien-3-one 1.333-hydrate 0.919 (3):0.081 (3) cocrystal
✍ Scribed by Ravindra, H. J. ;Dharmaprakash, S. M. ;Harrison, William T. A.
- Publisher
- International Union of Crystallography
- Year
- 2007
- Tongue
- English
- Weight
- 333 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
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📜 SIMILAR VOLUMES
The title compound, C~17~H~12~Cl~2~O, crystallizes in a centrosymmetric space group. The dihedral angle between the two benzene rings is 24.7 (1)°. The crystal packing is characterized by non-classical C—H...O and C—H...Cl inter- and intramolecular hydrogen bonds.
Single-crystal X-ray study T = 296 K Mean '(C±C) = 0.003 A Ê R factor = 0.034 wR factor = 0.099 Data-to-parameter ratio = 7.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
In the title cocrystal, 0.972(C 18 H 19 NO 4 ).0.028(C 17 H 16 BrNO 3 ), which arose from an impure starting material, all the atoms are overlapped except for one OMe group and the Br atom. The dihedral angle between the benzene ring mean planes is 18.20 (13) . A weak N-HÁ Á ÁO hydrogen bond helps t
Single-crystal X-ray study T = 105 K Mean '(C±C) = 0.002 A Ê R factor = 0.030 wR factor = 0.062 Data-to-parameter ratio = 14.3 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.