Phenoxide bridged tetranuclear Co(II), Ni(II), Cu(II) and Zn(II) complexes: Syntheses, characterization and fluorescence studies

► Ligand is fluorescence active and can act as fluorescence sensor for zinc. ► Ligand reported is tetranucleating towards the later 3d transition metal ions. ► Ni(II) complex is octahedral and all others are square pyramidal.