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In the title compound, C16H14N4O2S, intra­molecular N—H...N hydrogen bonding forms an S(5) ring, whereas N—H...O and C—H...S inter­actions complete S(6) ring motifs. In the crystal, mol­ecules form inversion dimers due to N—H...O inter­actions. The dimers are inter­linked through N—H...S hydrogen bonds and π–π inter­actions occur with a centroid–centroid distance of 3.8422 (11) Å between the meth­oxy-containing benzene ring and the five-membered heterocyclic ring.

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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.
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