organic compounds
The structure of the centrosymmetric title compound, C8H6Cl2N2O2·2C3H7NO, shows that the hydroximoyl chloride substituent has an essentially planar arrangement and the dihedral angle between this plane and the benzene plane is 18.3 (4)°. The hydroximoyl chloride group has a cis configuration. The packing can be described as a polymeric arrangement of molecules linked through O—HO hydrogen bonds.
organic compounds
The title compound, C13H11N3O, is essentially planar in the solid state and displays a trans configuration with respect to the azo double bond. The dihedral angle between the planes of the two aromatic rings is 4.9 (4)°. Molecules form infinite chains via N—HO and C—HO hydrogen bonds.