Unsymmetrical bimetallic complexes with M~(II)-(μ-OH)-M ~(III) cores (M~(II)M~(III) = FeIIFe ~(III), MnIIFe~(III), MnIIMn ~(III)): Structural, magnetic, and redox properties

摘要

Heterobimetallic cores are important units within the active sites of metalloproteins but are often difficult to duplicate in synthetic systems. We have developed a synthetic approach for the preparation of a complex with a Mn~(II)-(μ-OH)-Fe~(III) core, in which the metal centers have different coordination environments. Structural and physical data support the assignment of this complex as a heterobimetallic system. A comparison with analogous homobimetallic complexes, Mn~(II)-(μ-OH)-Mn~(III) and Fe~(II)-(μ-OH)-Fe~(III) cores, further supports this assignment.