Kaitlyn A Perez

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The aqueous speciation of iron(III)-tris(pyridylmethyl)amine (TPA) complexes was determined from potentiometric titration data, and the overall formation constants (β) for relevant species were calculated. At pH < 3 the mononuclear complex [Fe(TPA)](+3)(aq) predominates (log β = 10.75(15). Above pH 3 Fe(3+)-OH2 hydrolysis produces the μ-oxo dimer(More)
Heterobimetallic Mn/Fe cofactors are found in the R2 subunit of class Ic ribonucleotide reductases (R2c) and R2-like ligand binding oxidases (R2lox). Selective cofactor assembly is due at least in part to the thermodynamics of M(II) binding to the apoprotein. We report here equilibrium studies of Fe(II)/Mn(II) discrimination in the biomimetic model system(More)
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