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.

Keywords

• crystal structure
• thiosemicarbazone
• hydrogen bonds