MMCT energy change in cyanidometal-bridged trinuclear complexes by changing the ligand electron donating ability

To investigate the effect of MMCT in the complexes of cyanidometal-bridges, we synthesized and fully characterized a series of N2+ ( N = 1, 2, 3, 4, 5), and their one and two-electron oxidized products N3+ and N4+ are Class II mixed-valence compounds.