Potassium N-bromo-2-nitro­benzene­sulfonamidate monohydrate

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.

Potassium N-bromo-2,4-dichloro­benzene­sulfonamidate sesquihydrate

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.

N-(2,3-Dimethyl­phen­yl)-2-nitro­benzene­sulfonamide

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.