(2Z)-N-(2-Chloro­benz­yl)-2-(2-oxo-2,3-dihydro-1H-indol-3-yl­idene)hydrazinecarbothio­amide

In the title compound, C(16)H(13)ClN(4)OS, the isatin ring system is oriented at dihedral angles of 10.60 (7) and 72.60 (3)° with respect to the thio­semicarbazide and 2-chloro­benzyl groups, respectively. The near planarity of the isatin and thio­semicarbazide groups [r.m.s. deviations of 0.0420 and 0.0163 Å, respectively] is reinforced by intra­molecular N—H⋯O and N—H⋯N hydrogen bonds, which generate S(6) and S(5) rings, respectively. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds generate R (2) (2)(8) loops. Aromatic π–π stacking inter­actions between the centroids of heterocyclic five-membered and benzene rings [distance = 3.6866 (11) Å] are also observed.