Square pyramidal Cu(II) acylpyrazolone complex: Synthesis, characterization, crystal structure, DFT and Hirshfeld analysis, in vitro anti cancer evaluation ScienceDirect 4.5: Coordination Numbers and Structures Chemistry LibreTexts Synthesis, crystal structures and supramolecular architectures of square pyramidal Cu(II) complexes containing aromatic chelating N,N' donor ligands BMC Chemistry Springer Nature Link Square planar versus square pyramidal copper(II) complexes containing N3O moiety: Synthesis, structural characterization, kinetic and catalytic mimicking activity ScienceDirect Cu(II) Binding to the Peptide Ala His His, a Chimera of the Canonical Cu(II) Binding Motifs Xxx His and Xxx Zzz His Inorganic Chemistry