In the title compound, C12H8Cl2N2O4S, the N—C bond in the C—SO2—NH—C segment has gauche torsions with respect to the S=O bonds. Further, the N—H bond is syn to the ortho-nitro group in the sulfonyl benzene ring and also syn to both the ortho- and meta-Cl atoms in the aniline ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 61.15 (18)°. The dihedral angle between the planes of the benzene rings is 68.00 (6)°. The amide H atom exhibits an intra­molecular bifurcated N—H⋯(O,O) hydrogen bond. In the crystal, pairs of N—H⋯O(S) hydrogen bonds link the mol­ecules into inversion dimers with R 2 2(8) motifs.

In the title compound, C12H9ClN2O4S, the dihedral angle between the benzene rings is 31.4 (2)°. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into C(4) chains running along the a-axis direction.

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 R 2 2(8) rings.

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.

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.

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⋯Onitro hydrogen bonds link the mol­ecules into zigzag chains running along the a-axis direction.

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⋯Osulfonamide hydrogen bonds link the mol­ecules into inversion dimers.

The asymmetric unit of the title salt, K+·C6H3BrCl2NO2S−·1.5H2O, contains one K+ cation, one N-bromo-2,4-dichlorobenzenesulfonamidate anion, one water molecule in general position and one water molecule located on a twofold rotation axis. The K+ cation is hepta-coordinated by three water O atoms and four sulfonyl O atoms from three symmetry-related N-bromo-2,4-dichloro­benzene­sulfonamide anions. The S=N distance of 1.575 (3) Å is consistent with that of a double bond. In the crystal, the anions are linked by O—H⋯Br and O—H⋯N hydrogen bonds into layers parallel to the ac plane.

There are two independent mol­ecules in the asymmetric unit of the title compound, C14H14N2O4S. The N—H bonds are syn to the ortho-nitro groups in the sulfonyl benzene rings and anti to the methyl groups in the aniline benzene rings. The mol­ecules are twisted at the S—N bonds with torsion angles of −60.4 (3) and 58.8 (3)° in the two mol­ecules. The dihedral angles between the planes of the sulfonyl and the anilino benzene rings are 53.67 (8) and 56.99 (9)°. The amide H atoms of both mol­ecules are involved in an intra­molecular hydrogen bond, generating an S(7) motif. In the crystal, pairs of N—H⋯O(S) hydrogen bonds link like mol­ecules into inversion dimers.

In the title compound, K+·C6H4BrN2O4S−·H2O, the K+ ion is hepta-coordinated by two O atoms from two different water mol­ecules, three sulfonyl O atoms from three N-bromo-2-nitro-benzene­sulfonamidate anions and two nitro O atoms from two N-bromo-2-nitro-benzene­sulfonamidate anions. The S—N distance of 1.576 (4) Å is consistent with an S=N double bond. The crystal structure is stabilized by inter­molecular O—H⋯N and O—H⋯Br hydrogen bonds which link the molecules into polymeric layers running parallel to the bc plane.

In the title compound, C12H10N2O4S, the dihedral angle between the aromatic rings is 36.19 (18)°. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into C(4) chains running along the a axis.

The asymmetric unit of the title compound, C14H14N2O4S, consists of two crystallographically independent mol­ecules. The mol­ecules are twisted at the S—N bonds with C—S—N—C torsion angles of 44.2 (3) and −49.3 (3)°. The dihedral angles between the benzene rings in the two mol­ecules are 71.53 (7) and 72.11 (7)°. The amide H atoms exhibit bifurcated intra- and inter­molecular hydrogen bonds; the intra­molecular N—H⋯O(N) hydrogen bonds generate S(7) motifs. In the crystal, the independent mol­ecules are separately connected through the inter­molecular N—H⋯O(S) hydrogen bonds, generating a C(4) motif and a helical chain along the b axis for one mol­ecule and an R 2 2(8) motif and an inversion dimer for the other. The crystal studied was a pseudo-merohedral twin with twin law (-100/0-10/001), the refined ratio of the twin domains being 0.7876 (12):0.2124 (12).

In the title compound, C13H12N2O4S, the dihedral angle between the planes of the rings is 51.11 (10)°. In the crystal, mol­ecules are linked into inversion dimers through pairs of N—H⋯O(S) hydrogen bonds.

In the crystal of the title compound, C13H12N2O4S, the conformation of the N—H bond in the –SO2—NH– segment is syn to the ortho-nitro group in the sulfonyl benzene ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 76.55 (18)°. The dihedral angle between the planes of the rings is 72.64 (8)°. In the crystal, mol­ecules are linked by pairs of N—H⋯O(S) hydrogen bonds to form inversion dimers.

In the title compound, C13H12N2O4S, the dihedral angle between the benzene rings is 73.64 (7)°. The amide H atom exhibits bifurcated hydrogen bonding: an intra­molecular N—H⋯O hydrogen bond generates an S(7) motif while in the crystal, N—H⋯O(S) hydrogen bonds link the mol­ecules into zigzag C(4) chains running along the b axis.

In the title compound, C13H12N2O4S, the dihedral angle between the benzene rings is 53.44 (14)°. The amide H atom exhibits bifurcated hydrogen bonding: an intra­molecular N—H⋯O hydrogen bond generates an S(7) motif while in the crystal, N—H⋯O(S) hydrogen bonds link the mol­ecules into zigzag C(4) chains along the c axis.

In the title compound, C12H10N2O4S, the conformation of the N—H bond in the –SO2—NH– fragment is syn to the ortho-nitro group in the sulfonyl­benzene ring. The mol­ecule is twisted at the S—N bond, the C—N—S—C torsion angle being −72.83 (15)°. The dihedral angle between the benzene rings is 59.55 (7)°. The amide H atom and the nitro group O atom form an intra­molecular hydrogen bond, generating an S(7) motif. In the crystal, C—H⋯O hydrogen-bond inter­actions link the mol­ecules into S 2 2(10) networks.

In the crystal structure of the title compound, C10H12N2OS, the conformation of the two N—H bonds are anti to each other. The amide C=O and the C=S are are also anti to each other. The N—H bond adjacent to the benzene ring is syn to the m-methyl groups. The dihedral angle between the benzene ring and the side chain [mean plane of atoms C—C(O)N—C—N; maximum deviation 0.029 (2) Å] is 14.30 (7)°. There is an intramolecular N—H⋯O hydrogen bond generating an S(6) ring motif. In the crystal, the molecules are linked via N—H⋯) hydrogen bonds, forming chains propagating along [001]. The S atom is disordered and was refined using a split model [occupancy ratio 0.56 (4):0.44 (4)].

In the title compound, C12H9ClN2O4S, the N—H bond in the –SO2—NH– segment is syn to both the ortho-nitro group in the sulfonyl­benzene ring and the ortho-Cl atom in the aniline ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 75.0 (2)°. The dihedral angle between the sulfonyl­benzene and aniline rings is 54.97 (11)°. The amide H atom shows bifurcated hydrogen bonding, generating S(7) and C(4) motifs. In the crystal, N—H⋯O(S) hydrogen bonds link the mol­ecules into chains.

In the title compound, C12H9ClN2O4S, the dihedral angle between the aromatic rings is 73.65 (7)°. The amide H atom shows bifurcated hydrogen bonding, generating an intra­molecular S(7) and an inter­molecular C(4) motif.

In the title compound, C12H9ClN2O4S, the dihedral angle between the aromatic rings is 70.27 (8)°. In the crystal, mol­ecules are linked by pairs of N—H⋯O(S) hydrogen bonds, forming inversion dimers.

In the crystal structure of the title compound, C11H14N2OS, the two N—H bonds are anti to each other. There is an intramolecular N—H⋯O hydrogen bond generating an S(6) ring motif.In the crystal, mol­ecules are linked via N—H⋯S hydrogen bonds with an R 2 2(8) motif and N—H⋯O hydrogen bonds with an R 2 2(12) motif into chains running along [1-10].

In the title compound, C11H11NO5S, the dihedral angle between the benzene ring and the amide group is 76.88 (6)°. In the crystal, N—H⋯O(S) and O—H⋯O hydrogen bonds connect the mol­ecules into hydrogen-bonded layers perpendicular to the a axis.

In the crystal structure of the title compound, C9H8Cl2N2OS, there are two mol­ecules in the asymmetric unit which are connected by a pair of N—H⋯S hydrogen bonds. An intra­molecular N—H⋯O hydrogen bond stabilizes the mol­ecular conformation of each molecule.

In the title compound, C11H14N2OS, the two N—H bonds are anti to each other and one of them is anti to the C=S and the other is syn. Further, the amide C=S and the C=O groups are anti to each other. The dihedral angle between the benzene ring and the side chain is 83.74 (5)°. An intra­molecular N—H⋯O hydrogen bond occurs. In the crystal, mol­ecules are linked into inversion dimers by pairs of N—H⋯S inter­actions.