title: (2E,5E)-2,5-Bis(3,4,5-trimethoxy-benzyl-idene)cyclo-penta-none.
abstract: The title compound, C(25)H(28)O(7), was prepared by the base-catalysed reaction of 3,4,5-trimethoxy-benzaldehyde with cyclo-penta-none. The mol-ecule has crystallographic twofold rotation symmetry and adopts an E-configuration about the central olefinic bonds. The two benzene rings and the central cyclo-penta-none ring are almost coplanar [dihedral angle = 4.7 (2)°].
authors.forename: Yi-Feng
authors.initials: YF
authors.lastname: Sun
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Feng-Yu
authors.initials: FY
authors.lastname: Zhang
authors.forename: Hong-Ji
authors.initials: HJ
authors.lastname: Chen
authors.forename: Yi-Ping
authors.initials: YP
authors.lastname: Cui