N′-[3-(Hy­droxy­imino)­butan-2-yl­idene]-4-methyl­benzene-1-sulfono­hydrazide

In the title compound, C11H15N3O3S, the C—S—N(H)—N linkage is nonplanar, the torsion angle being 75.70 (12)°. The compound has two almost planar fragments linked to the S atom: the hydrazone-derivative fragment [(HONC4H6)N—N(H)–] and the tolyl fragment (C7H7–) have maximum deviations from the mean plane through the non-H atoms of 0.0260 (10) and 0.0148 (14) Å, respectively. The two planar fragments make an inter­planar angle of 79.47 (5)°. In the crystal, mol­ecules are connected through inversion centers via pairs of N—H⋯O and O—H⋯N hydrogen bonds

4-Methyl-N′-(2-oxoindolin-3-yl­idene)benzene-1-sulfono­hydrazide

In the title compound, C15H13N3O3S, the C—S—N(H)—N linkage is non-planar, the torsion angle being −65.12 (13)° and the S atom showing a tetra­hedral environment. The compound has two almost planar fragments linked to the S atom: the isatin-derivative fragment [(C8H5NO)N—N(H)–] and the tolyl fragment [C7H7–] have maximum deviations from the mean plane through the non-H atoms of 0.0813 (13) and 0.0094 (16) Å, respectively, and make an inter­planar angle of 80.48 (3)°. In the crystal, mol­ecules are connected into inversion dimers via pairs of N—H⋯O hydrogen bonds. Additionally, the mol­ecular structure is stabilized by an intra­molecular N—H⋯O hydrogen bond

1-(2,4,6-Trioxo-1,3-diazinan-5-yl­idene)thio­semicarbazide

The title mol­ecule, C5H5N5O3S, is approximately planar, with a maximum deviation from the mean plane through the non-H atoms of 0.182 (3) Å for the amine N atom. In the crystal, mol­ecules are connected via N—H⋯O and N—H⋯S inter­actions, building a three-dimensional hydrogen-bonded network. Additionally, a weak intra­molecular N—H⋯O hydrogen bond is observed

1-(5-Bromo-2-oxoindolin-3-yl­idene)thio­semicarbazide acetonitrile monosolvate

In the crystal structure of the title compound, C9H7BrN4OS·C2H3N, the mol­ecules are connected via N—H⋯O and N—H⋯S inter­actions into zigzag chains perpendicular to [001]. The mol­ecules in these chains are additionally linked to acetonitrile solvent mol­ecules through N—H⋯N hydrogen bonding. The mol­ecules are arranged in layers and are stacked in the direction of the c axis indicative of π–π inter­actions, with distance = 3.381 (7) Å for the C⋯C interaction parallel to [001]. An intra­molecular N—H⋯O hydrogen bond is also observed in the main mol­ecule