title: Crystal structure of (E,E)-2',4'-di-hydroxy-aceto-phenone azine di-methyl-formamide disolvate.
abstract: In the title compound {systematic name: 4,4'-[1,1'-(hydrazinediyl-idene)bis-(ethan-1-yl-1-yl-idene)]bis-(benzene-1,3-diol)}, C16H16N2O4·2C3H7NO, the (E,E)-2',4'-di-hydroxy-aceto-phenone azine mol-ecule is centrosymmetric, the mid-point of the N-N bond being located on an inversion centre. All the non-H atoms of the azine mol-ecule are approximately coplanar, the maximum deviation being 0.017 (2) Å. An intra-molecular O-H⋯N hydrogen bond occurs between the azine N atom and the hy-droxy group. In the crystal, azine and di-methyl-formamide solvent mol-ecules are linked by O-H⋯O hydrogen bonds.
authors.affiliation: Department of Chemistry, Taiyuan Normal University, Taiyuan 030031, People's Republic of China.
authors.forename: Wen-Juan
authors.initials: WJ
authors.lastname: Li
authors.affiliation: Department of Chemistry, Taiyuan Normal University, Taiyuan 030031, People's Republic of China.
authors.forename: Hong-Fei
authors.initials: HF
authors.lastname: Han
keywords: (E,E)-2′,4′-di­hydroxy­aceto­phenone azine; crystal structure; hydrogen bond