Syntheses, crystal structures and density functional theory investigations of copper(ii) complexes bearing tridentate Schiff base ligands derived from 8-aminoquinoline

Abstract

Three copper(II) complexes, [Cu(L¹)(H₂O)(OClO₃)]_n (1), [Cu(L¹)(N₃)] (2) and [Cu(L²)(Cl)(H₂O)] (3) [HL¹ = 4-chloro-2-((quinolin-8-ylimino)methyl)phenol and HL² = 2-ethoxy-6-((quinolin-8-ylimino)methyl)phenol], have been synthesized and characterized by elemental analyses, IR and UV–Vis spectroscopy and single-crystal X-ray diffraction studies. The theoretical study, carried out using density functional theory (DFT) calculations, is devoted to the analysis of the interesting supramolecular assemblies in the solid state of the structures, paying especial attention to lp –π and π–π interactions involving the quinolin-8-ylimino moiety.