N-(3-Chloro­phen­yl)-4-nitro­benzene­sulfonamide

There are two independent mol­ecules in the asymmetric unit of the title compound, C₁₂H₉ClN₂O₄S, in which the dihedral angles between the planes of the benzene rings are 46.90 (14) and 44.50 (14)°. In the crystal, N—H...O hydrogen bonds link the mol­ecules into zigzag chains parallel to the a axis.

N-(3,5-Dimethyl­phen­yl)-4-nitro­benzene­sulfonamide

There are two independent mol­ecules in the asymmetric unit of the title compound, C₁₄H₁₄N₂O₄S, in which the dihedral angles between the benzene rings are 56.22 (15) and 58.16 (14)°. In the crystal, N—H...O_nitro hydrogen bonds link the mol­ecules into zigzag chains running along the a-axis direction.

N-(2,5-Dimethyl­phen­yl)-2-nitro­benzene­sulfonamide

In the crystal structure of the title compound, C₁₄H₁₄N₂O₄S, the N—H bond is syn to the ortho-nitro group in the sulfonyl benzene ring and anti to the ortho- and syn to the meta-methyl groups in the aniline ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 71.41 (18)°. The dihedral angle between the planes of the benzene rings is 51.07 (8)°. In the crystal, pairs of N—H...O_sulfonamide hydrogen bonds link the mol­ecules into inversion dimers.

N-(3,5-Dichloro­phen­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₂H₈Cl₂N₂O₄S, the C—S—N—C torsion angle is 49.34 (18)° and the dihedral angle between the benzene rings is 71.92 (10)°. The amide H atom exhibits bifurcated hydrogen bonding. The N—H bond is syn to the ortho-nitro group enabling the formation of an S(7) loop. In the crystal, pairs of N—H...O(S) hydrogen bonds link the mol­ecules into inversion dimers via R₂²(8) rings.

N-(2-Chloro­phen­yl)-4-nitro­benzene­sulfonamide

In the title compound, C₁₂H₉ClN₂O₄S, the dihedral angle between the benzene rings is 70.60 (11)°. An intra­molecular N—H...Cl contact occurs. In the crystal, mol­ecules form inversion dimers via pairs of N—H...O hydrogen bonds.