Acta Cryst. (2005). E61, o2656-o2658 [ doi:10.1107/S1600536805023093 ]
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-HO hydrogen bond. In the crystal structure, the molecules are stacked through - interactions along . Some weak C-HO interactions stabilize the packing.
Online 23 July 2005
Copyright © International Union of Crystallography