title: 2,2'-[1,1'-(Hexane-1,6-diyldioxy-dinitrilo)diethyl-idyne]diphenol.
abstract: The molecule of the title compound, C(22)H(28)N(2)O(2), lies across an inversion centre with one half-mol-ecule in the asymmetric unit. The mol-ecule adopts an E configuration with respect to the azomethine C=N bond and the imino group is coplanar with the aromatic ring. Within the mol-ecule, the planar units are parallel, but extend in opposite directions from the hexa-methyl-ene bridge. There are intra-molecular O-H⋯N hydrogen bonds between the hydroxyl groups and the oxime N atoms. There are also weak inter-molecular C-H⋯O bonds that link each mol-ecule to two others, forming chains along the a axis.
authors.affiliation: School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China.
authors.forename: Wen-Kui
authors.initials: WK
authors.lastname: Dong
authors.forename: Xue-Ni
authors.initials: XN
authors.lastname: He
authors.forename: Yin-Xia
authors.initials: YX
authors.lastname: Sun
authors.forename: Li
authors.initials: L
authors.lastname: Xu
authors.forename: Jun-Feng
authors.initials: JF
authors.lastname: Tong