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Acta Cryst. (2005). E61, o2656-o2658  [ doi:10.1107/S1600536805023093 ]

4-[(2-Chloro-4-nitrophenyl)diazenyl]phenol dimethylformamide solvate

X.-L. You, Y. Zhang, Y. Zhang and D.-C. Zhang

Abstract: The principal molecule of the title molecule, C12H8ClN3O3·C3H7NO, is essentially planar. The two benzene rings make a dihedral angle of only 6.9 (1)°. The nitro group is slightly twisted with respect to the benzene ring to which it is attached [3.7 (1)°]. The dimethylformamide solvent molecule and the azobenzene molecule are linked through a strong O-H...O hydrogen bond. In the crystal structure, the molecules are stacked through [pi]-[pi] interactions along [010]. Some weak C-H...O interactions stabilize the packing.

Online 23 July 2005

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