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The novel μ-oxo-diiron complex [Fe2O(BPHPA)2](ClO4)4 [BPHPA is (6-hydroxymethyl-2-pyridylmethyl)bis(2-pyridylmethyl)amine, C19H20N4O], contains a binuclear centrosymmetric [Fe2O(BPHPA)2]4+ cation (the bridging O atom lies on an inversion centre) and four perchlorate anions. Each iron ion is coordinated by four N atoms [Fe-N = 2.117 (5)2.196 (5) baring;] and one O atom [Fe-O = 2.052 (5) baring;] from a BPHPA ligand, and by one bridging oxo atom [Fe-O = 1.7896 (9) baring;], forming a distorted octahedron. There are hydrogen bonds between the hydroxy group and perchlorate O atoms [O-H···O = 2.654 (7) baring;]. [ABSTRACT FROM AUTHOR]