Tetranuclear mixed-valence Co(II/III) and binuclear Ni(II) complexes incorporating hydroxyl-rich ligand: Syntheses, structures and magnetic properties

► Three complexes supported by hydroxyl-rich ligand have been synthesized. ► The structures of theses complexes were confirmed by X-ray crystallography. ► Antiferromagnetic interactions were determined for 1 and ferromagnetic couplings were found for 3.