A pseudo cubic tetranuclear copper cluster: Synthesis, structure and magnetic property

Tetranuclear copper(ii) cubane complexes derived from self-assembled 1,3-dimethyl-5-(o-phenolate-azo)-6-aminouracil: structures, non-covalent interactions and magnetic property

A new doubly opened 4 + 2 Cu₄O₄ cubane cluster exhibits strong antiferromagnetic exchange coupling with J₁ = −110.1 cm⁻¹, and J₂ = −27.1 cm⁻¹.

Copper(ii) complexes with benzhydrazone-related ligands: synthesis, structural studies and cytotoxicity assay

The present study reports the synthesis and characterization of copper(ii) complexes with benzhydrazone-related ligands. They were screened for their cytotoxic activityin vitroin THP-1 and HepG2 human cancer cell lines.

Copper(ii) cubanes with a {Cu4O} core and well defined S = 1 ground state

Three copper cubanes with the unusual S = 1 ground state have been characterized and their magnetic properties rationalized as a function of the asymmetry of the {Cu₄O₄} cage and correlated with the Cu–O–Cu bond angles.

Copper(ii) hydrazone complexes with different nuclearities and geometries: synthetic methods and ligand substituent effects

The effect of synthetic methods on the nuclearity and geometry of copper(ii) complexes with aroylhydrazones was investigated. Thermally induced structural transformations of dinuclear complexes under solvent-free conditions are also described.

A versatile salicyl hydrazonic ligand and its metal complexes as antiviral agents

Acylhydrazones are very versatile ligands and their coordination properties can be easily tuned, giving rise to metal complexes with different nuclearities. In the last few years, we have been looking for new pharmacophores able to coordinate simultaneously two metal ions, because many enzymes have two metal ions in the active site and their coordination can be a successful strategy to inhibit the activity of the metalloenzyme. As a part of this ongoing research, we synthesized the acylhydrazone H2L and its complexes with Mg(II), Mn(II), Co(II), Ni(II), Cu(II) and Zn(II). Their characterization, both in solution--also by means of potentiometric studies--and in the solid state, evidenced the ability of the o-vanillin hydrazone scaffold to give rise to different types of metal complexes, depending on the metal and the reaction conditions. Furthermore, we evaluated both the free ligand and its metal complexes in in vitro studies against a panel of diverse DNA- and RNA-viruses. In particular, the Mg(II), Mn(II), Ni(II) and Zn(II) complexes had EC50 values in the low micromolar range, with a pronounced activity against vaccinia virus.