title: 5,5'-Di-4-pyridyl-2,2'-(5-tert-butyl-m-phenyl-ene)bis-(1,3,4-oxadiazole).
abstract: The title compound, C(24)H(20)N(6)O(2), is a novel 1,3,4-oxadiazole derivative which has potential as an electron-transporting material in organic electroluminescent (EL) devices. In the crystal, the mol-ecular framework is almost planar with an r.m.s. deviation of 0.091 (4) Å and it exists in an E form. Intra-molecular C-H⋯O and C-H⋯N hydrogen bonds are observed between the benzene and 1,3,4-oxadiazole rings. The tert-butyl group is disordered over two sites, with occupancy factors of 0.78 (1) and 0.22 (1) for the major and minor orientations, respectively. In the crystal structure, mol-ecules aggregate via C-H⋯N inter-actions, forming mol-ecular tapes along the b axis, which aggregate to form a mol-ecular sheet via C-H⋯N inter-actions.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Ono
authors.forename: Kenichi
authors.initials: K
authors.lastname: Tsukamoto
authors.forename: Masaaki
authors.initials: M
authors.lastname: Tomura