1H-1,2,4-Triazol-4-ium (3,4-dichloro­phen­yl)methane­sulfonate

In the title molecular salt, C₂H₄N₃⁺·C₇H₅Cl₂O₃S⁻, C—C—S angle [112.25 (18)°] deviates slightly from that expected for ideal sp³-hybridization geometry. In the crystal, the components are linked by N—H...O and bifurcated N—H...(O,O) hydrogen bonds into chains parallel to [110].

N′²,N′⁵-Bis[(E)-2-hy­droxy­benzyl­idene]-3,4-dimethyl­thio­phene-2,5-dicarbohydrazide

In the title mol­ecule, C₂₂H₂₀N₄O₄S, both C=N bonds are in an E conformation. The benzene rings form dihedral angles of 12.10 (13) and 25.17 (12)° with the thio­phene ring. The dihedral angle between the two benzene rings is 17.59 (14)°. There are two intra­molecular O—H...N hydrogen bonds. In the crystal, N—H...O hydrogen bonds connect mol­ecules into chains along [010].