5,5′-Di-4-pyridyl-2,2′-(5-tert-butyl-m-phenylene)bis(1,3,4-oxadiazole)

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 molecular framework is almost planar with an r.m.s. deviation of 0.091 (4) angstrom and it exists in an E form. Intramolecular C-H center dot center dot center dot O and C-H center dot center dot center dot 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, molecules aggregate via C-H center dot center dot center dot N interactions, forming molecular tapes along the b axis, which aggregate to form a molecular sheet via C-H center dot center dot center dot N interactions.