A Novel Hydrogen-Bonded Duplex Made up of Water Molecules and Halide Ions in the Sandwich Inclusion Structures of (C10H8N3S)+·X·2H2O [X = Cl−, Br−]

The X-ray crystal structures of thiabendazolium halide dihydrates (C10H8N3S)+·X·2H2O [X = Cl−, Br−] 1, 2 reveal a novel hydrogen-bonded duplex consisting of alternate edge-sharing (H2O·X)2 quadrilaterals and (2H2O·X)2 hexagons; notably these duplexes exist as host lattices and sandwich thiabendazole molecules into two different supramolecular architectures by similar N···X and N···O hydrogen bonds.