2-[(2-Aza­niumyleth­yl)carbamo­yl]phenolate–phenol (1/1)

In the title 1:1 adduct, C₉H₁₂N₂O₂·C₆H₆O, the dihedral angle between the benzene ring and the salicylic amide group is 6.68 (6)°. The conformation of the amide group is supported by two intra­molecular N—H...O hydrogen bonds, which close S(6) and S(7) rings. In the crystal, the components are linked by O—H...O and N—H...O hydrogen bonds, generating (100) sheets.

(E)-2-[(1H-Imidazol-4-yl)methyl­idene]hydrazinecarbo­thio­amide monohydrate

In the title compound, C₅H₇N₅S·H₂O, the main mol­ecule is approximately planar, with a maximum deviation from the mean plane through the non-H atoms of 0.1478 (12) Å for the amine N atom. In the crystal, the components are connected via N—H...O, N—H...S and O—H...N hydrogen bonds, forming a three-dimensional network.

N,N′-(2-Hy­droxy­propane-1,3-di­yl)bis­(2-hy­droxy­benzamide) monohydrate

In the title hydrate, C₁₇H₁₈N₂O₅·H₂O, the complete organic mol­ecule is generated by a crystallographic mirror plane with one C and one O atom lying on the mirror plane. The O atom of the water mol­ecule has m site symmetry. Two symmetry-related intra­molecular O—H...O hydrogen bonds complete S(6) rings in the organic mol­ecule. In the crystal, the components are linked into (010) sheets by O—H...O and N—H...O hydrogen bonds.