title: 3-[(E)-3-(2,4-Dichloro-phen-yl)prop-2-en-oyl]-4-hy-droxy-2H-chromen-2-one.
abstract: In the title compound, C(18)H(10)Cl(2)O(4), the chromen-2-one ring system is almost planar [maximum deviation = 0.028 (1) Å] and is inclined at an angle of 16.35 (4)° with respect to the benzene ring. The C=C bond has an E configuration. The mol-ecular conformation is stabilized by an almost symmetric intra-molecular O⋯H⋯O hydrogen bond and a C-H⋯O inter-action, both of which form S(6) ring motifs. In the crystal structure, mol-ecules are linked into sheets lying parallel to (100) via inter-molecular C-H⋯O hydrogen bonds. The crystal packing is further consolidated by π-π stacking inter-actions [centroid-to-centroid separation = 3.6615 (6) Å].
authors: Mohammad
authors: M
authors: Asad
authors: Chuan-Wei
authors: CW
authors: Oo
authors: Hasnah
authors: H
authors: Osman
authors: Ching Kheng
authors: CK
authors: Quah
authors: Hoong-Kun
authors: HK
authors: Fun
references: Acta Crystallogr Sect E Struct Rep Online. 2010 Sep 04;66(Pt 10):o2491-2
references: 21587490
references: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references: 19171970
references: Bioorg Med Chem. 2010 Feb;18(3):1364-70
references: 20064725
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677
references: Acta Crystallogr Sect E Struct Rep Online. 2010 May 26;66(Pt 6):o1446-7
references: 21579518