Synthesis, characterization, and crystal structure analysis of Zn(II) and Cd(II) coordination compounds containing 4-((pyridin-4-ylmethylene)amino)phenol Schiff-base ligand

Abstract

Zn(II) and Cd(II) coordination compounds containing 4-((pyridin-4-ylmethylene)amino)phenol ligands were synthesized and then characterized using spectroscopic techniques and single crystal X-ray crystallography. The molecular structure and crystal packing of these complexes, as well as the packing of related compounds, were investigated using geometrical, Hirshfeld surface analyses, and theoretical calculations. The supramolecular architecture of these coordination complexes is governed by a combination of πꞏꞏꞏπ stacking, C-Hꞏꞏꞏπ, O-HꞏꞏꞏN, and C-HꞏꞏꞏX hydrogen bonding interactions. This study provides further insight into the understanding of the coordination chemistry of group IIB containing Schiff-base ligand and the role of weak non-covalent interactions in the solid-state structure of coordination compounds.