(3Z,3′E)-3,3′-[Cyclo­hexane-1,2-diylbis(aza­nylyl­idene)]bis­(indolin-2-one) N,N-dimethyl­formamide monosolvate dihydrate

In the Schiff base mol­ecule of the title compound, C(22)H(20)N(4)O(2)·C(3)H(7)NO·2H(2)O, the cyclo­hexane ring adopts a chair conformation with the two imine groups linked at the equatorial positions. The two indolin-2-one ring systems make a dihedral angle of 65.63 (5)°. In the crystal, the Schiff base mol­ecules are connected through bifurcated N—H⋯(O,N) hydrogen bonds, forming inversion dimers. The water molecules link the dimers and the dimethylformamide molecules via O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds. Together with C—H⋯π and π–π [centroid–centroid distance = 3.3889 (10) Å] inter­actions a three-dimensional supra­molecular structure is formed.