title: 4,4'-Dimethyl-2,2'-[1,2-phenyl-enebis(nitrilo-methyl-idyne)]diphenol.
abstract: In the title Schiff base, C(22)H(20)N(2)O(2), the benzene ring forms dihedral angles of 53.92 (1) and 3.62 (1)° with the two salicylaldimine groups. There are two strong O-H⋯N intra-molecular hydrogen bonds. The crystal packing is stabilized by weak inter-molecular C-H⋯O hydrogen bonds and π-π stacking inter-actions (average distance 3.39 Å).
authors.affiliation: State Key Laboratory Base of Novel Functional Materials and Preparation Science, Institute of Solid Materials Chemistry, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China.
authors.forename: Ke-Wei
authors.initials: KW
authors.lastname: Lei
authors.forename: Hai-Mei
authors.initials: HM
authors.lastname: Feng
authors.forename: Tian-Hua
authors.initials: TH
authors.lastname: Zhou