The asymmetric unit of 1 contains three crystallographically independent
molecules with similar geometries. The crystal packing of the
ligand is stabilized by means of an extended system of N–H S
hydrogen bonds, leading to the formation of a supramolecular
architecture (Fig. 3). Intermolecular N–H S hydrogen bonds are
present between the thioamide sulfur and NH hydrogen of a
nearby molecule of the ligand. The C–S bond distance of
1.657(3) Å (Table 2) in 1 agrees well with those formed in other
related compounds and comes in the range observed for C@S double
bonds [1.56 Å] [23] (See Scheme 2).