4-(3-Methoxyphenyl)-1-(2-oxoindolin-3-ylidene)thiosemicarbazide

4-(3-Iodo-phen-yl)-1-(2-oxoindolin-3-yl-idene)thio-semicarbazide

In the title compound, C₁₅H₁₁IN₄OS, intra­molecular N—H⋯N, N—H⋯O and C—H⋯S inter­actions generate one S(5) and two S(6) ring motifs. In the crystal, mol­ecules form centrosymmetric dimers via pairs of N—H⋯O inter­actions, generating R₂²(8) ring motifs. In addition a short inter­molecular I⋯S contact of 3.352 (3) Å is observed.

4-(3-Nitrophenyl)-1-(2-oxoindolin-3-ylidene)thiosemicarbazide

In the title compound, C₁₅H₁₁N₅O₃S, intra­molecular N—H⋯N hydrogen bonding forms an S(5) ring motif, whereas N—H⋯O and C—H⋯S inter­actions type complete S(6) ring motifs. The 2-oxoindoline and 3-methoxy­phenyl rings are almost planar, with r.m.s. deviations of 0.0178 and 0.0149 Å, respectively, and form a dihedral angle of 33.59 (3)°. In the crystal, mol­ecules are inter­linked through the nitro groups in an end-to-end fashion via N—H⋯O and C—H⋯O inter­actions.