Vimala, GGovindaraj, JHaribabu, JKarvembu, RSubbiahpandi, A2026-08-172026-08-172014-10-241600-5368https://doi.org/10.1107/S1600536814023216http://nitt.ndl.gov.in/handle/123456789/197In the title compound, C14H11N3OS, the acenaphthylene ring system and hydrazinecarbothioamide unit (=N - NH - C=S - NH-) are essentially coplanar [with maximum deviations from their mean planes of -0.009 (2) and 0.033 (2) Å, respectively], and make a dihedral angle of 1.59 (9)°. The molecular conformation is stabilized by two weak intramolecular hydrogen bonds (N - H⋯O and N - H⋯N), which generate S(6) and S(5) ring motifs. In the crystal, molecules are linked by N - H⋯S hydrogen bonds, forming chains along [010]. The chains are linked via pairs of C - H⋯O hydrogen bonds, enclosing R 2 2(10) ring motifs, and C - H⋯π interactions, forming a three-dimensional framework. The absolute structure of the title compound was determined by resonant scattering.enArticle