Crystal structure and Hirshfeld surface analysis of rac-2-[2-(4-chloro­phen­yl)-3,4-di­hydro-2H-1-benzo­pyran-4-yl­idene]hydrazine-1-carbo­thio­amide

In the title compound, C(16)H(14)N(3)OSCl, a Schiff base derivative of a thio­semicarbazide with a flavanone, the 4-chlorophenyl ring is inclined to the benzene ring of the chromane ring system by 30.72 (12)°. The pyran ring has an envelope conformation with the methine C atom as the flap. The mean plane of the thio­urea unit is twisted with respect to the benzene ring of the chromanone ring system, subtending a dihedral angle of 19.78 (19)°. In the crystal, mol­ecules are linked by two pairs of N—H⋯S hydrogen bonds, forming inversion dimers enclosing R (2) (2)(8) ring motifs, which are linked to form ribbons propagating along the b-axis direction. The inter­molecular contacts in the crystal have been analysed using Hirshfeld surface analysis.