Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry Square planar versus square pyramidal copper(II) complexes containing N3O moiety: Synthesis, structural characterization, kinetic and catalytic mimicking activity ScienceDirect Synthesis, crystal structures and supramolecular architectures of square pyramidal Cu(II) complexes containing aromatic chelating N,N' donor ligands BMC Chemistry Springer Nature Link 4.5: Coordination Numbers and Structures Chemistry LibreTexts A rare square pyramidal copper acetate hybrid with strong antiferromagnetic coupling and promising optoelectronic potential ScienceDirect