Elucidating the Electronic Structure of High-Spin [Mn(TPP)Cl] Using Magnetic Circular Dichroism Spectroscopy.

Manganese porphyrins are used as catalysts in the oxidation of olefins and nonactivated hydrocarbons. Key to these reactions are high-valent Mn-(di)oxo species, for which [Mn(Porph)(X)] serve as precursors. To elucidate their properties, it is crucial to understand the interaction of the Mn center with the porphyrin ligand.