5-Hydroxy-2-nitrobenzaldehyde thiosemicarbazone (HNBATSC)

Abstract

The asymmetric unit of the title compound, C8H8N4O3S, consists of two independent molecules. Each molecule is approximately planar with dihedral angles of 8.71 (3) and 1.50 (2)° between the aromatic ring and the thiosemicarbazide moiety while the NO2 group makes dihedral angles of 29.27 (3) and 17.78 (3)° with the benzene ring. In the crystal, the molecules are linked by N—H...S, O—H...O and N—H...O hydrogen bonds, forming two-dimensional networks parallel to (100).

Keywords

• Thiosemicarbazone
• Evolution of molecular structure
• Crystallographic studies
• Triclinic symmetry
• crystal structure