3-Chloro-N-(2-chloro­phen­yl)benzamide

In the title compound, C₁₃H₉Cl₂NO, the meta-Cl atom in the benzoyl ring is positioned anti to the C=O bond, while the ortho-Cl atom in the aniline ring is positioned syn to the N—H bond. The two aromatic rings are almost coplanar, making a dihedral angle of 4.73 (5)°. The crystal structure is stabilized by N—H...O hydrogen bonds, which link the mol­ecules into chains along the b axis.

N-(2-Chloro-4-nitro­phen­yl)maleamic acid monohydrate

The title compound, C₁₀H₇ClN₂O₅·H₂O, crystallizes with a half-mol­ecule each of N-(2-chloro-4-nitro­phen­yl)maleamic acid (located on a mirror plane) and water (located on a twofold rotation axis) in the asymmetric unit. The main mol­ecule is planar by symmetry and its conformation is stabilized by an intra­molecular O—H...O hydrogen bond. In the crystal, N—H...O and O—H...O hydrogen bonds link the mol­ecules into a three-dimensional network.

4-Chloro-N-(2,3-dimethyl­phen­yl)benzamide

In the title compound, C₁₅H₁₄ClNO, the ortho- and meta-methyl substituents in the aniline ring are anti to the N—H bond. The dihedral angle between the benzoyl and aniline benzene rings is 95.0 (1)°. N—H...O hydrogen bonds and C—H...π inter­actions link the mol­ecules in the crystal structure.