NHR1 (where R1 is a substituent with a hydroxyl), and Z is ???Cl or ???NHR1 (where R1 is a substituent with a hydroxyl)) (where R1 is ???Cl or ???NHR1 (where R1 is a substituent with a hydroxyl), and R2 is ???H, ???NH2, or ???NHR1 (where R1 is a substituent with a hydroxyl)).The iron-salen complexes of the invention have a specific structure represented by the above Formulas (I) to (IV), resulting