title: Bis(2-hydroxy-benzaldehyde oxime) O,O'-butane-1,4-diyldicarbonyl ether.
abstract: The mol-ecule of the title compound, C(20)H(20)N(2)O(6), lies across a crystallographic inversion centre, the asymmetric unit comprising one half-mol-ecule. An intra-molecular O-H⋯N hydrogen bond generates a six-membered ring, producing an S(6) ring motif. Pairs of inter-molecular C-H⋯O hydrogen bonds link neighbouring mol-ecules into a layer with R(2) (2)(38) ring motif. The crystal structure is further stabilized by the inter-molecular C-H⋯π inter-actions.
authors.forename: Bijan
authors.initials: B
authors.lastname: Etemadi
authors.forename: Reza
authors.initials: R
authors.lastname: Kia
authors.forename: Hashem
authors.initials: H
authors.lastname: Sharghi
authors.forename: Mona
authors.initials: M
authors.lastname: Hosseini Sarvari