title: 1,1'-{[1,4-Phenyl-enebis(methyl-ene)]bis-(-oxy)bis-(4,1-phenyl-ene)}diethanone.
abstract: The centroid of the central aromatic ring of the title mol-ecule, C(24)H(22)O(4), is located on an inversion center. The dihedral angle between the central and terminal benzene rings is 75.00 (7)°. In the crystal, mol-ecules are linked through C-H⋯O hydrogen bonds into chains along [121]. The chains are connected into layers via C-H⋯π inter-actions.
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur,  Malaysia.
authors.forename: Nassir N
authors.initials: NN
authors.lastname: Al-Mohammed
authors.forename: Yatimah
authors.initials: Y
authors.lastname: Alias
authors.forename: Zanariah
authors.initials: Z
authors.lastname: Abdullah
authors.forename: Hamid
authors.initials: H
authors.lastname: Khaledi