Synthesis and crystal structure of 1-(4-{[(E)-3,5-dibromo- 2-hydroxybenzylidene]amino}phenyl)ethanone Oxime

The title compound, 1-(4-{[(E)-3,5-dibromo-2-hydroxybenzylidene]amino} phenyl)ethanone oxime, was synthesized by the reaction of 3,5- dibromosalicylaldehyde with 4-amino-phenylethanone oxime in ethanol. The molecule crystallizes in the triclinic system, space group P21/c, with four crystallographically independent molecules in the unit cell. The two benzene rings form a dihedral angle of 21.63°. In the crystal structure, there are a strong intramolecular O2-H2⋯N2 hydrogen bond between the hydroxyl (O2-H2) group and the Schiff base nitrogen (N2) atom, with the distance between N2 and O2 is 2.580(4) ̊. Moreover, a dimer is formed with another adjacent molecule by two pairs of intermolecular O1-H1⋯N1 hydrogen bonds.