1,3-Benzothia­zole–oxalic acid (2/1)

The asymmetric unit of the title compound, C7H5NS·0.5C2H2O4, contains one benzothia­zole mol­ecule and half an oxalic acid mol­ecule, the complete mol­ecule being generated by inversion symmetry. The benzothia­zole mol­ecule is essentially planar, with a maximum deviation of 0.007 (1) Å. In the crystal, the benzothia­zole mol­ecules inter­act with the oxalic acid mol­ecules via O—H⋯N and C—H⋯O hydrogen bonds generating R 2 2(8) (× 2) and R 4 4(10) motifs, thereby forming supra­molecular ribbons along [101]