(3Z)-3-[(Z)-2-(2-Oxoindolin-3-yl­idene)hydrazin-1-yl­idene]indolin-2-one 0.17-hydrate

In the title compound, C₁₆H₁₀N₄O₂·0.17H₂O, prepared by the one-step condensation reaction of isatin with hydrazine hydrate under microwave irradiation, the complete organic mol­ecule is generated by crystallographic inversion symmetry and therefore exists in an S-trans conformation. In the crystal, mol­ecules are linked by N—H...O hydrogen bonds, generating a three-dimensional framework with [001] channels, which are occupied by the disordered water mol­ecules.