Charge-Transfer Spectroscopy and Electrochemistry of Transition-Metal Phthalocyanines

Charge-transfer spectroscopy of the selected transition-metal phthalocyanines will be discussed in conjunction with their electrochemical properties. Specifically, UV-Vis and magnetic circular dichroism (MCD) spectra of the PcFe(II)L2, PcRu(II)L2, PcMn(III)LX, and PcCr(III)LX (L is a neutral and X is a monoanionic ligand) will be discussed in terms of their metal-to-ligand (MLCT) and ligand-to-metal (LMCT) charge-transfer spectroscopy determined by the experimental UV-Vis and MCD as well as theoretical (time-dependent density functional theory) methods. Lever's EL scale was used to predict and correlate the MLCT and LMCT transitions in transition-metal phthalocyanines.