Date Published: May 01, 2010
Publisher: International Union of Crystallography
Author(s): Hana Bashir Shawish, M. Jamil Maah, Seik Weng Ng.
In the title molecule, C10H13N3O3S, the thiosemicarbazide =N—NH—C(=S)—NH– fragment is twisted with respect to the aromatic ring [dihedral angle = 20.5 (1)°]. A weak N—H⋯S hydrogen bond [3.480 (1) Å] links two molecules about a center of inversion to generate a ring. The hydroxy groups are engaged in intermolecular hydrogen bonding; the O—H⋯O and O—H⋯S hydrogen bonds generate a layer motif.
For the crystal structures of 3,4-dihydroxybenzaldehyde 4-ethylthiosemicarbazone and 2,4-dihydroxybenzaldehyde 4-ethylthiosemicarbazone, see: Kayed et al. (2008 ▶); Tan et al. (2008 ▶).