3-(4-Methyl­phen­yl)-4-[(thio­semi­carba­zono)meth­yl]-1,2,3-oxa­diazol-3-ium-5-olate 1,4-dioxane hemisolvate

The asymmetric unit of the title compound, C(11)H(11)N(5)O(2)S·0.5C(4)H(8)O(2), contains one 3-(p-tol­yl)sydnone 4-thio­semi­carba­zone mol­ecule and a half mol­ecule of 1,4-dioxane, which lies abount an inversion centre. The sydnone ring is almost planar, with a maximum deviation of 0.002 (1) Å, and forms a dihedral angle of 46.31 (5)° with the benzene ring. In the crystal, the two components are linked into a tape along [01-1] by N—H⋯O and N—H⋯S hydrogen bonds. The crystal structure is further stabilized by C—H⋯O and C—H⋯π inter­actions, forming a three-dimensional network.