Synthesis, characterization, and crystal structure analysis of group IIB coordination compounds containing N,N′-bidentate chelating Schiff-base ligand

Abstract

The solid-state chemistry of coordination complexes has become an actively developing research area of modern inorganic chemistry. Herein, Zn and Hg coordination compounds containing a N,N′-bidentate chelating Schiff-base ligand were synthesized and then characterized using spectroscopic techniques and single-crystal X-ray crystallography. The molecular structures and crystal packing modes of these complexes, as well as the crystal structures of related compounds, were investigated thoroughly using geometrical and Hirshfeld surface analyses, as well as theoretical calculations. It has been revealed that the supramolecular architecture of these series of coordination complexes is governed mainly by a combination of chelate···π and π···π stacking, and non-classical hydrogen bonding interactions. This study provides further insight into the understanding of the coordination chemistry of group IIB complexes containing Schiff-base ligand and the role of weak non-covalent interactions in the solid-state structure of coordination compounds.