title: Crystal structure of 2-amino-5-methyl-sulfanyl-1,3,4-thia-diazol-3-ium chloride monohydrate.
abstract: The title salt, C3H6N3S2 (+)·Cl(-)·H2O, crystallized with two organic cations, two chloride anions and two water mol-ecules in the asymmetric unit. The methyl C atoms deviate from their respective bound ring planes by 0.081 and 0.002 Å. In the crystal, the components are connected via N-H⋯O, N-H⋯Cl and O-H⋯Cl hydrogen bonds, forming sheets lying parallel to (100). The sheets are linked into bilayers by O-H⋯Cl hydrogen bonds involving the chloride ions and water mol-ecules. Within the bilayers there are π-π inter-actions [inter-centroid distances = 3.4654 (4) and 3.4789 (4) Å] involving inversion-related cations.
authors.affiliation: Laboratoire de Chimie des Matériaux, Faculté des sciences de Bizerte, 7021 Zarzouna, Tunisia.
authors.forename: Sarra
authors.initials: S
authors.lastname: Soudani
authors.affiliation: Cristallographie, Résonance Magnétique et Modélisations (CRM2), UMR CNRS-UHP 7036, Institut Jean Barriol, Université de Lorraine, BP 70239, Boulevard des Aiguillettes, 54506 Vandoeuvre-les-Nancy, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Aubert
authors.affiliation: Cristallographie, Résonance Magnétique et Modélisations (CRM2), UMR CNRS-UHP 7036, Institut Jean Barriol, Université de Lorraine, BP 70239, Boulevard des Aiguillettes, 54506 Vandoeuvre-les-Nancy, France.
authors.forename: Christian
authors.initials: C
authors.lastname: Jelsch
authors.affiliation: Laboratoire de Chimie des Matériaux, Faculté des sciences de Bizerte, 7021 Zarzouna, Tunisia.
authors.forename: Cherif
authors.initials: C
authors.lastname: Ben Nasr
keywords: 1,3,4-thia­diazole; biological activity; crystal structure; organic-inorganic hybrid