Bis{'-[3-(4-nitro-phen-yl)-1-phenyl-prop-2-en-1-yl-idene]--phenyl-carbamimido-thio-ato}zinc(II): crystal structure, Hirshfeld surface analysis and computational study.

The title zinc bis-(thio-semicarbazone) complex, [Zn(CHNOS)], comprises two ,-donor anions, leading to a distorted tetra-hedral NS donor set. The resultant five-membered chelate rings are nearly planar and form a dihedral angle of 73.28 (3)°. The configurations about the endocyclic- and exocyclic-imine bonds are and , respectively, and that about the ethyl-ene bond is . The major differences in the conformations of the ligands are seen in the dihedral angles between the chelate ring and nitro-benzene rings [40.48 (6) . 13.18 (4)°] and the -bound phenyl and nitro-benzene ring [43.23 (8) and 22.64 (4)°]. In the crystal, a linear supra-molecular chain along the -axis direction features amine-N-H⋯O(nitro) hydrogen bonding. The chains assemble along the 2-screw axis through a combination of phenyl-C-H⋯O(nitro) and π(chelate ring)-π(phen-yl) contacts. The double chains are linked into a three-dimensional architecture through phenyl-C-H⋯O(nitro) and nitro-O⋯π(phen-yl) inter-actions.