title: 4,4'-Dimethyl-2,2'-[(3-aza-pentane-1,5-di-yl)bis-(nitrilo-methyl-idyne)]diphenol.
abstract: In the crystal structure of the title Schiff base, C(20)H(25)N(3)O(2), the salicylaldimine groups at each end of the mol-ecule are essentially planar and make a dihedral angle of 84.94 (3)° with each other. There are strong intra-molecular O-H⋯N hydrogen bonds and a weak inter-molecular N-H⋯O hydrogen bond.
authors.forename: Fang-Fang
authors.initials: FF
authors.lastname: Dang
authors.forename: Xin-Wei
authors.initials: XW
authors.lastname: Wang
authors.forename: Qing-Cui
authors.initials: QC
authors.lastname: Yang
authors.forename: Guo-Ping
authors.initials: GP
authors.lastname: Han