ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, vol.61, 2005 (SCI-Expanded)
In the title compound, C19H18N6O2S, none of the five- and six-membered rings are coplanar with the triazolone ring. Intramolecular C-(HN)-N-... and intermolecular C-(HN)-N-... and C-(HO)-O-... hydrogen bonds, together with some C-H-...pi interactions, help to stabilize the structure.