Research Article: 1-(2,3,4-Trihydroxy­benzyl­idene)-4-ethyl­thio­semicarbazide

Date Published: May 01, 2010

Publisher: International Union of Crystallography

Author(s): Hana Bashir Shawish, M. Jamil Maah, Seik Weng Ng.

http://doi.org/10.1107/S1600536810014078

Abstract

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.

Partial Text

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 ▶).

Source:

http://doi.org/10.1107/S1600536810014078