The structure and magnetic properties of μ 3-oxotriiron(III) complex [Fe 3O(OBZ) 6(CH 3OH) 3] (NO 3)(CH 3OH) 2 (HOBZ = benzoic acid)

Abstract

A new μ 3-O triiron(III) complex [Fe 3O(OBZ) 6(CH 3OH) 3](NO 3)(CH 3OH) 2 (HOBZ = benzoic acid) has been synthesized, its structure has been determined and variable temperature magnetic susceptibility has been measured. In the cation of the complex, three iron atoms form an equilateral triangle with μ 3-O in the centre. An intramolecular antiferromagnetic exchange interaction occurs with J = −27.06 cm −1, and a weaker intermolecular antiferromagnetic exchange interaction occurs with zJ′ = −2.59 cm −1.