Abstract
A new heterodinuclear mixed valence complex [Fe IIINi II(BPBPMP)(OAc) 2]ClO 4 1 with the unsymmetrical N 5O 2 donor ligand 2-bis[{(2-pyridylmethyl)-aminomethyl}-6-{(2-hydroxybenzyl)(2-pyridylmethyl)}-aminomethyl]-4-methylphenol (H 2BPBPMP) has been synthesized and characterized. 1 crystallizes in the monoclinic system, space group P2 1/ n, a=12.497(2), b=18.194(4), c=16.929(3) Å, β=94.11(3)°, V=3839.3(12) Å 3 and has an Fe IIINi II(μ-phenoxo)-bis(μ-carboxylato) core. Solution studies of 1 indicate that a pH-induced change in the bridging acetate occurs and the formation of an active [(OH)Fe III(μ-OH)Ni II(OH 2)] + species as the catalyst for phosphate diester hydrolysis and DNA interaction is proposed. In addition, the results presented here suggest that Ni II would be a good candidate as a substitute of M II in purple acid phosphatases.
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