Acta Cryst. (2007). E63, o4123-o4124 [ doi:10.1107/S1600536807045977 ]
Abstract: The title co-crystal, 0.91C17H15BrCl2O3·0.09C17H15BrCl2O3, is a disordered mixture of two isomeric compounds. The ratio of the major and minor components in the co-crystal was obtained by refinement as 0.911 (3):0.089 (3). The dihedral angle between the two aromatic rings is 42.5 (2)°. Crystal packing is stabilized by intermolecular C-HO hydrogen-bonding interactions which link the molecules into cyclic centrosymmetric R22(24) dimers.
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