title: 2,2'-Dihydroxybiphenyl-3,3'-di-carb-aldehyde dioxime.
abstract: The mol-ecule of the title compound, C(14)H(12)N(2)O(4), lies across a crystallographic inversion centre situated at the mid-point of the C-C intra-annular bond. The mol-ecule is not planar, the dihedral angle between the aromatic rings being 50.1 (1)°. The oxime group is in an E position with respect to the -OH group and forms an intra-molecular O-H⋯N hydrogen bond. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link mol-ecules into chains propagating along [001]. The crystal structure is further stabilized by inter-molecular stacking inter-actions between the rings [centroid-to-centroid distance = 3.93 (1) Å], resulting in layers parallel to the bc plane.
authors.forename: Ekaterina
authors.initials: E
authors.lastname: Golovnia
authors.forename: Elena V
authors.initials: EV
authors.lastname: Prisyazhnaya
authors.forename: Turganbay S
authors.initials: TS
authors.lastname: Iskenderov
authors.forename: Matti
authors.initials: M
authors.lastname: Haukka
authors.forename: Igor O
authors.initials: IO
authors.lastname: Fritsky