title: 6,6'-Dimeth-oxy-2,2'-[pyridine-2,3-diylbis(nitrilo-methyl-idyne)]diphenol.
abstract: In the title compound, C(21)H(19)N(3)O(4), two intramolecular N-H⋯O hydrogen bonds generate two six-membered rings. The dihedral angles between the central heterocyclic ring and the two pendant rings are 61.5 (2) and 63.5 (1)°.
authors.affiliation: College of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, People's Republic of China.
authors.forename: Qiuhong
authors.initials: Q
authors.lastname: Li