Crystal structure of 3-chloro-N-(2-nitro-phen-yl)benzamide.

In the title compound, C13H9ClN2O3, the mean plane of the central amide fragment (r.m.s.

Crystal structure of 2-methyl-3-nitro-benzoic anhydride.

The title mol-ecule, C16H12N2O7, lies on a twofold rotation axis which bis-ects the central O atom. The dihedral angle between two symmetry-related benzene rings is 48.54 (9)°.

Crystal structure of 2-nitro-N-(2-nitro-phen-yl)benzamide.

In the title compound, C13H9N3O5, the mean plane of the non-H atoms of the central amide fragment C-N-C(=O)-C [r.m.s.

N-(2-Nitro-phen-yl)thio-phene-2-carbox-amide.

The title compound, C11H8N2O3S, shows two mol-ecules per asymmetric unit, with the dihedral angles between the benzene and thio-phene rings of 13.53 (6) and 8.50 (5)° being a notable difference between them.

4-Bromo-N-(2-nitro-phen-yl)benzamide.

The title nitro-phenyl benzamide, C13H9BrN2O3, with two mol-ecules in the asymmetric unit, has dihedral angles of 16.78 (15) and 18.87 (14)° between the benzene rings.

N-(2-Nitro-phen-yl)furan-2-carboxamide.

In the title furan-carboxamide derivative, C11H8N2O4, the benzene and furan rings are rotated from the mean plane of the central fragment by 2.68 (5) and 7.03 (4)°, respectively.