N-Methyl-2-{3-methyl-2-[(2Z)-pent-2-en-1-yl]cyclo-pent-2-en-1-yl-idene}hydrazinecarbo-thio-amide.

The equimolar and hydro-chloric acid-catalysed reaction between cis-jasmone and 4-methyl-thio-semicarbazide in ethano-lic solution yields the title compound, C(13)H(21)N(3)S (common name: cis-jasmone 4-methyl-thio-semicarbazone). Two mol-ecules with all atoms in general positions are present in the asymmetric unit. In one of them, the carbon chain is disordered [site occupancy ratio = 0.821†(3):0.179†(3)]. The thio-semicarbazone entities [N-N-C(=S)-N] are approximately planar, with the maximum deviation from the mean plane through the selected atoms being -0.0115†(16)†à (r.m.s.d. = 0.0078†à ) for the non-disordered mol-ecule and 0.0052†(14)†à (r.m.s.d. = 0.0031†à ) for the disordered one. The mol-ecules are not planar, since the jasmone groups have a chain with sp (3)-hybridized carbon atoms and, in addition, the thio-semicarbazone fragments are attached to the respective carbon five-membered rings and the dihedral angles between them for each mol-ecule amount to 8.9†(1) and 6.3†(1)°. In the crystal, the mol-ecules are connected through pairs of N-H⋯S and C-H⋯S inter-actions into crystallographically independent centrosymmetric dimers, in which rings of graph-set motifs R (2) (2)(8) and R (2) (1)(7) are observed. A Hirshfeld surface analysis indicates that the major contributions for the crystal cohesion are from H⋯H (70.6%), H⋯S/S⋯H (16.7%), H⋯C/C⋯H (7.5%) and H⋯N/N⋯H (4.9%) inter-actions [considering the two crystallographically independent mol-ecules and only the disordered atoms with the highest s.o.f. for the evaluation].