title: 4,4'-[2,2-Dimethyl-propane-1,3-diyl-bis(nitrilo-methyl-idyne)]dibenzonitrile.
abstract: The title compound, C(21)H(20)N(4), is a bidentate Schiff base ligand. An intra-molecular C-H⋯N hydrogen bond forms a five-membered ring, producing an S(5) ring motif. The cyano and imino [-C(H(2))-N=C-] functional groups are coplanar with the benzene ring in each half of the mol-ecule. The packing of the mol-ecules is controlled by C-H⋯π and π-π inter-actions [centroid-to-centroid distance = 3.6944 (8) Å].
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Hadi
authors.initials: H
authors.lastname: Kargar
authors.forename: Reza
authors.initials: R
authors.lastname: Kia