Acta Cryst. (2013). E69, o1250 [ doi:10.1107/S1600536813018977 ]
Abstract: The title azo molecule, C16H9Br3N2O, adopts a trans conformation with respect to the azo N=N double bond. An intramolecular O-HN hydrogen bond forms an S(6) ring motif. The dihedral angle between the naphthalene ring system and the benzene ring is 33.80 (16)°. In the crystal, molecules are stacked in columns along the a axis by - interactions [centroid-centroid distances = 3.815 (3) and 3.990 (3) Å].
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