2‐Naphthylmethyl N ‐[1‐(4‐pyridyl)ethylidene]hydrazinecarbodithioate

The molecules in the crystal structure of the title compound, C 19 H 17 N 3 S 2 , are linked by an intermolecular N—H...N [2.839 (5) Å] hydrogen bond via the α‐N and the pyridyl N atoms. The thione S atom is in a trans position with respect to the methylpyridine fragment across the C—N bond but adopts a cis position with respect to the naphthalene ring across the C—S bond. There is a π–π stacking interaction between the naphthalene rings, with a centroid–centroid distance of 3.397 (2) Å.