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A new tetra­dentate unsymmetrical Schiff base, C 20 H 15 BrN 2 O 2 , has been synthesized from 4-bromo- o -phenyl­enediamine and salicylaldehyde in refluxing ethanol. The dihedral angles between the two hydroxy­phenyl rings and the bromo- o -phenyl­enediiminatoin group are 68.6 (1) and 8.7 (1)°; the dihedral angle between the two hydroxy­phenyl rings is 70.3 (1)°. There are two relatively strong intra­molecular of O—H⋯N hydrogen bonds.

2,2′-[5-Bromo-o-phenylenebis(nitrilomethylidyne)]diphenol