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

Acta Crystallogr E Crystallogr Commun. 2021 Jul 27;77(Pt 8):839-846. doi: 10.1107/S2056989021007398. eCollection 2021 Aug 1.

Abstract

The title zinc bis-(thio-semicarbazone) complex, [Zn(C22H17N4O2S)2], comprises two N,S-donor anions, leading to a distorted tetra-hedral N2S2 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 Z and E, respectively, and that about the ethyl-ene bond is E. 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) cf. 13.18 (4)°] and the N-bound phenyl and nitro-benzene ring [43.23 (8) and 22.64 (4)°]. In the crystal, a linear supra-molecular chain along the b-axis direction features amine-N-H⋯O(nitro) hydrogen bonding. The chains assemble along the 21-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.

Keywords: Hirshfeld surface analysis; Schiff base; crystal structure; hydrogen bonding; thio­semicarbazone; zinc.

Grants and funding

This work was funded by Research University Grant Scheme grants 9199834 and 9174000; Malaysian Ministry of Science, Technology and Innovatio grant 09-02-04-0752-EA001; Sunway University Sdn Bhd grant GRTIN-IRG-01-2021.