title: 2-Amino-benzothia-zolium 2,4-dicarboxy-benzoate monohydrate.
abstract: Cocrystallization of 2-amino-benzothia-zole with benzene-1,2,4-tricarboxylic acid in a mixed solvent affords the title ternary cocrystal, C(7)H(7)N(2)S(+)·C(9)H(5)O(6) (-)·H(2)O, in which one of the carboxyl groups of the benzene-tricarboxylic acid is deproton-ated and the heterocyclic N atom of the 2-amino-benzothia-zole is protonated. In the crystal, inter-molecular N-H⋯O and O-H⋯O hydrogen-bonding inter-actions stabilize the packing.
authors.affiliation: College of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, People's Republic of China.
authors.forename: Na
authors.initials: N
authors.lastname: Zhang
authors.forename: Kai-Sheng
authors.initials: KS
authors.lastname: Liu
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Zhao