In the title compound, C15H16ClNO2S, the C—SO2—NH—C torsion angle is 67.45 (17)°. The two aromatic rings are tilted relative to each other by 44.5 (1)°. The crystal structure features inversion-related dimers linked by pairs of N—H⋯O hydrogen bonds..

In the mol­ecular structure of the title compound, C14H12ClNO, the meta-Cl atom in the benzoyl ring is positioned syn to the C=O bond, while the meta-methyl group in the aniline ring is positioned anti to the N—H bond. The two aromatic rings make a dihedral angle of 77.4 (1)°. In the crystal, the molecules are linked by N—H⋯O hydrogen bonds, forming C(4) chains propagating in [010].

In the title compound, C14H12ClNO, the N—H bond is anti to the carbonyl bond and the two aromatic rings make a dihedral angle of 5.4 (2)°. In the crystal, inter­molecular N—H⋯O hydrogen bonds connect the mol­ecules into chains running along the b axis. The chains are inter­connected through short Cl⋯Cl contacts [3.279 (1) Å].

The molecule of the title compound, C12H9Br2NO2S, is U shaped with the central C—S—N—C segment having a torsion angle of 63.2 (4)°. Further, the dihedral angle between the benzene rings is 38.5 (2)°. The crystal structure features strong N—H...O hydrogen bonds that form infinite [100]C(4) chains. Molecules in adjacent chains are interlinkedviaC—H...O interactions which run along thebaxis, formingC(7) chains. This results in a two-dimensional network in theabplane; adjacent networks are connected by short Br...Br contacts [3.5092 (8) Å] propagating along the diagonal of theacplane, so that a three-dimensional supramolecular architecture ensues.

In the title compound, C16H17NO, the N—H bond is in an anti conformation with respect to the C=O bonds. The aniline and benzoyl rings are almost coplanar, making a dihedral angle of 4.9 (3)°. The plane of the amide group makes an angle of 61.3 (3)° with the aniline ring and 58.3 (3)° with the benzoyl ring. In the crystal, the mol­ecules are linked by N—H⋯O hydrogen bonds into chains running along the b axis.