Crystal structure of 3-({[(thio-phen-2-yl)methyl-idene]hydrazin-yl}carbon-yl)pyridinium chloride dihydrate.

In the title compound, C11H10N3OS(+)·Cl(-)·2H2O, the organic cation exhibits a dihedral angle of 21.26 (8)° between the mean planes of the pyridine and thio-phene rings, and dihedral angles of 15.11 (9) and 6.