Suwunwong Thitipone, Chantrapromma Suchada, Pakdeevanich Paradorn, Fun Hoong-Kun
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 13;65(Pt 7):o1575-6. doi: 10.1107/S1600536809021850.
The mol-ecule of the title heteroaryl chalcone, C(16)H(16)O(4)S, which consists of substituted thio-phene and benzene rings bridged by the prop-2-en-1-one group, is slightly twisted. The dihedral angle between the thio-phene and 3,4,5-trimethoxy-phenyl rings is 12.18 (4)°. The three meth-oxy groups have two different conformations; two meth-oxy groups are coplanar [C-O-C-C torsion angles = -1.38 (12) and 0.47 (12)°] whereas the third is (-)-synclinal with the benzene ring. In the crystal structure, adjacent mol-ecules are linked in a face-to-side manner into chains along the c axis by weak C-H⋯O(enone) inter-actions. These chains are stacked along the b axis by weak C-H⋯O(meth-oxy) inter-actions.
