(E)-1-(2,4,6-Trihydroxybenzylidene)-4-ethylthiosemicarbazide dihydrate

Abstract

In the title mol­ecule, C10H13N3O3S·2H2O, the thio­semi­carbazide =N—NH—C(=S)—NH– fragment [torsion angle = 0.2 (1)°] is nearly coplanar with the benzene ring [dihedral angle = 2.4 (1)°]. The benzene ring and semicarbazide moiety are located on opposite sites of the C=N bond, showing an E configuration. The hy­droxy, imino and water H atoms are engaged in extensive hydrogen bonding, forming a three-dimensional network.