(1E,4E)-1,5-Bis(2,4,6-trimeth­oxy­phen­yl)penta-1,4-dien-3-one

There are two crystallographically independent mol­ecules in the asymmetric unit of the title bis­chalcone derivative, C(23)H(26)O(7). The mol­ecules are unsymmetrical and almost planar: the dihedral angle between two benzene rings is 1.04 (7)° in one mol­ecule and 2.31 (7)° in the other. The central penta-1,4-dien-3-one fragment makes dihedral angles of 7.61 (7) and 6.82 (7)° with the two adjacent benzene rings in one mol­ecule, while the corresponding values are 7.85 (7) and 9.42 (6)° in the other. In both mol­ecules, the three meth­oxy groups of the two 2,4,6-trimeth­oxy­phenyl units are coplanar with the attached benzene rings [C—O—C—C- torsion angles of −1.5 (2), −7.2 (2) and 4.1 (2)° in one mol­ecule and −0.7 (2), −5.5 (2) and −0.6 (2)° in the other]. The mol­ecular conformations are stabilized by weak intra­molecular C—H⋯O inter­actions generating two S(6) ring motifs. In the crystal, mol­ecules are linked by weak inter­molecular C—H⋯O inter­actions into zigzag chains parallel to the c axis. The crystal structure is further stabilized by C—H⋯π inter­actions and π–π inter­actions with centroid–centroid distances of 3.6433 (8) Å.