Crystal structure of 3-bromo-2-hydroxybenzoic acid

• Main Authors: Gerhard Laus, Volker Kahlenberg, Thomas Gelbrich, Sven Nerdinger, Herwig Schottenberger
• Format: Article
• Language: English
• Published: International Union of Crystallography 2015-05-01
• Series: Acta Crystallographica Section E: Crystallographic Communications
• Subjects: crystal structure; hydrogen bonding; structural systematics; XPac; salicylic acid derivative
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S2056989015007331

Mutual carboxyl–carboxyl O—H...O hydrogen bonds link the molecules of the title compound, C7H5BrO3, into centrosymmetric dimers which display a central R22(8) ring motif. In addition, there is an intramolecular hydroxyl–carboxyl O—H...O interaction present. A comparison with the crystal structures of 59 other substituted derivatives of salicylic acid shows that both the centrosymmetric carboxyl–carboxyl O—H...O dimer and the stacking mode of molecules along the short a axis observed in the title structure are frequent packing motifs in this set.