(1E,4E)-1,5-Bis(2,4,5-trimethoxyphenyl)penta-1,4-dien-3-oneThis paper is dedicated to His Majesty King Bhumibol Adulyadej of Thailand (King Rama IX) for his sustainable development of the country.

• Main Authors: Hoong-Kun Fun, Pumsak Ruanwas, Suchada Chantrapromma
• Format: Article
• Language: English
• Published: International Union of Crystallography 2010-02-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536809055421

There are three molecules in the asymmetric unit of the title compound, C23H26O7, in which the dihedral angles between two benzene rings are 4.34 (9), 18.11 (8) and 8.54 (8)°. The central penta-1,4-dien-3-one fragment makes dihedral angles of 3.95 (9) and 3.32 (16)° with the two adjacent benzene rings in one molecule, whereas the corresponding pairs of angles in the other two molecules are 10.34 (9)/17.46 (8)° and 7.87 (8)/13.33 (8)°. In the crystal, molecules are linked by intermolecular C—H...O and C—H...π weak interactions into a three-dimensional network. Finally, π–π interactions [centroid...centroid distances = 3.5984 (10) and 3.5545 (10) Å] are observed.