Fun, H.-K.Chantrapromma, S.Chandrakantha, B.Isloor, A.M.Shetty, P.2026-02-052011Acta Crystallographica Section E: Structure Reports Online, 2011, 67, 1, pp. o205-o20616005368https://doi.org/10.1107/S1600536810052505https://idr.nitk.ac.in/handle/123456789/27358The molecule of the title thiadiazole derivative, C<inf>11</inf>H <inf>11</inf>N<inf>3</inf>O<inf>2</inf>S<inf>2</inf>, has a butterfly-like structure and the whole molecule is disordered with a site-occupancy ratio of 0.629 (4):0.371 (4). The molecule is disordered in such a way that the 3-methyl-4-nitrophenyl units of the major and minor components are approximately related by 180° rotation around the C - N bond axis. The dihedral angle between the 1,3,4-thiadiazole and benzene rings is 70.8 (4) ° in the major component and 74.9 (6) ° in the minor component. In the crystal, molecules are arranged into screw chains along the c axis. These chains are stacked along the b axis. Weak intermolecular C - H?O and C - H?? interactions and a short C?O contact [3.005 (7) Å] are present.