Syntheses, crystal structures, magnetochemistry and electrochemistry of macrocyclic dicopper(II) complexes: Monodentate behavior of a potentially chelating ligand

The work in this paper presents syntheses, crystal structures, magnetic properties, spectroscopy and electrochemistry of four diphenoxo-bridged dicopper(II) complexes derived from four Robson type tetraiminodiphenolate macrocyclic ligands. One complex contains monodentate 4-methyl-2,6-diformylphenolate ligand through its phenolate oxygen atom. A correlation of the E½ versus shifting of the metal center from the basal plane is proposed.