title: (1E,4E)-1,5-Bis(2,4,5-trimethoxy-phen-yl)penta-1,4-dien-3-one.
abstract: There are three mol-ecules in the asymmetric unit of the title compound, C(23)H(26)O(7), 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 mol-ecule, whereas the corresponding pairs of angles in the other two mol-ecules are 10.34 (9)/17.46 (8)° and 7.87 (8)/13.33 (8)°. In the crystal, mol-ecules are linked by inter-molecular C-H⋯O and C-H⋯π weak inter-actions into a three-dimensional network. Finally, π-π inter-actions [centroid⋯centroid distances = 3.5984 (10) and 3.5545 (10) Å] are observed.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Pumsak
authors.initials: P
authors.lastname: Ruanwas
authors.forename: Suchada
authors.initials: S
authors.lastname: Chantrapromma