Synthesis and crystal structure of ((E)-{2-[(E)-(4-hy­droxynaphthalen-1-yl)methyl­­idene]hydrazin-1-yl}(methyl­sulfan­yl)methyl­­idene)azanium hydrogen sulfate monohydrate

In the title hydrated mol­ecular salt, C13H14N3S+·HSO4−·H2O, the protonation of the azomethine N atom in sulfuric acid medium involves the formation of the bis­ulfate anion. The mol­ecular structure of the cation is obtained from the thiol tautomer of thio­semicarbazone wherein the naphthalene moiety and the conjugation of the bonds contribute to the planarity of the mol­ecular skeleton. In the crystal, the cation, anion and water mol­ecule of crystallization are linked by a series of O—H⋯O and N—H⋯O hydrogen bonds, forming a three-dimensional network. Within this network, there are also C—H⋯π inter­actions present involving symmetry-related naphthalene rings.