Crystal structure of 1-(4-formylbenzylidene)thiosemicarbazone

Abstract

The asymmetric unit of the title compound, C9H9N3OS, contains two approximately planar molecules (r.m.s. deviations for 14 non-H atoms = 0.094 and 0.045 Å), with different conformations. In one of them, the C=O group is syn to the S atom and in the other it is anti. Each molecule features an intramolecular N - H⋯N hydrogen bond, which generates an S(5) ring. In the crystal, molecules are linked by N - H⋯O and N - H⋯S hydrogen bonds, generating discrete networks; the syn molecules form [010] chains and the anti molecules form (100) sheets.