Binuclear bis(o-semiquinonato)cobalt(II) complexes with bridging tetradentate N-donor ligand

Novel binuclear bis(o-semiquinonato)cobalt complexes containing N-donor bridging ligand have been obtained. The strong π-acceptor ability of bridging ligand provides high spin state of cobalt ions. All complexes are characterized by sufficiently strong metal-metal, metal-ligand and ligand-ligand antiferromagnetic exchange interactions.75