(A) Absorbance and (B) FTIR spectra for [MnII(OH)FeIII]+ (black solid line),38 [FeII(OH)FeIII]+ (black dashed line),38 [CoII(OH)FeIII]+ (black dotted line), [NiII(OH)FeIII]+ (grey solid line), [CuII(OH)FeIII]+ (grey dashed line), (F) [ZnII(OH)FeIII]+ (grey dotted line). Absorbance measurements were performed on 0.1 mM CH2Cl2 solutions at room temperature, and FTIR measurements were performed in KBr discs.