title: Crystal structure of 2'-hy-droxy-aceto-phenone 4-methyl-thio-semicarbazide.
abstract: In the organic mol-ecule of the title hydrate, C11H15N3OS·H2O, {systematic name: 3-ethyl-1-{(E)-[1-(2-hy-droxy-phen-yl)ethyl-idene]amino}-thio-urea monohydrate}, a dihedral angle of 5.39 (2)° is formed between the hy-droxy-benzene ring and the non-H atoms comprising the side chain (r.m.s. deviation = 0.0625 Å), with the major deviation from planarity noted for the terminal ethyl group [the C-N-C-C torsion angle = -172.17 (13)°]. The N-H H atoms are syn and an intra-molecular hy-droxy-imine O-H⋯N hydrogen bond is noted. In the crystal, the N-bonded H atoms form hydrogen bonds to symmetry-related water mol-ecules, and the latter form donor inter-actions with the hy-droxy O atom and with a hy-droxy-benzene ring, forming a O-H⋯π inter-action. The hydrogen bonding leads to supra-molecular tubes aligned along the b axis. The tubes are connected into layers via C-H⋯O inter-actions, and these stack along the c axis with no directional inter-actions between them.
authors.affiliation: Department of Chemistry, Universiti Putra Malaysia, 43400 Serdang, Malaysia.
authors.forename: Junita
authors.initials: J
authors.lastname: Jamsari
authors.affiliation: Department of Chemistry, Universiti Putra Malaysia, 43400 Serdang, Malaysia.
authors.forename: Nur Fatihah
authors.initials: NF
authors.lastname: Abas
authors.affiliation: Department of Chemistry, Universiti Putra Malaysia, 43400 Serdang, Malaysia.
authors.forename: Thahira Begum S A
authors.initials: TB
authors.lastname: Ravoof
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink
keywords: O—H⋯π inter­actions; crystal structure; hydrogen bonding; thio­semicarbazide