Abstract

A new N,O-donor binucleating ligand, 2-bis[{(2-pyridylmethyl)-aminomethyl}-{(2-hydroxybenzyl)(2-pyridylmethyl)}-aminomethyl]-4-meth (H 2BPBPMP), and its first binuclear Fe IIFe III complex have been prepared in order to provide synthetic analogues for the coordination environment on the active site of purple acid phosphatases. The complex [Fe IIFe III(BPBPMP)(OAc) 2]ClO 4·CH 3OH was obtained from a self-assembled type reaction between Fe(ClO 4) 2· 6H 2B, H 2BPBPMP and sodium acetate trihydrate in methanol. The complex has been characterized by IR, CHN, molar conductivity, magnetic susceptibility, Mössbauer, electronic absorption spectroscopies and electrochemical methods of analyses, and turns out to be the first synthetic analogue for the redox properties ( E°′=0.38 V versus NHE) of uteroferrin.

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