title: Space group revsion of the triclinic polymorph of salicyl-aldehyde azine.
abstract: The structure of the title compound, C(14)H(12)N(2)O(2) {systematic name: 2,2'-[hydrazinediylidenebis(methanylyl-idene)]diphen-ol}, has already been determined in the triclinic space group P[Formula: see text] with Z = 4 [El-Medani, Aboaly, Abdalla & Ramadan (2004 ▶). Spectrosc. Lett.37, 619-632]. However, the correct space group should be P2(1)/c with Z = 4. This structure is a new polymorph of the already known monoclinic polymorph of salicyladehyde azine, which crystallizes in space group P2(1)/n with Z = 2. The benzene rings form a dihedral angle of 46.12 (9)°. Two intramolucular O-H⋯N hydrogen bonds occur.
authors.forename: Aamer
authors.initials: A
authors.lastname: Saeed
authors.forename: Michael
authors.initials: M
authors.lastname: Bolte
authors.forename: Muhammad
authors.initials: M
authors.lastname: Arshad