Structure and magnetic property of mu-oxo bridged dinuclear iron(III) complex with trialkylated tridentated ligands

摘要

mu-Oxo bridged dinuclear iron(III) complex with trialkylated tridentate ligand [Fe-2(mu-O)(3C8-bzimpy)(2)Cl-4]CHCl3 (1, and 3C8-bzimpy=2,6-bis(N-octylbenzimidazol-2-yl)-4-octyloxypyridine) was synthesized and the magnetic property was investigated. Single crystal X-ray structural analysis of complex 1 revealed mu-oxo bridged dinuclear structure with N3OCl2 donor set. Complex 1 has constructed one-dimensional chain structure by CH- interactions and CH-Cl hydrogen bonds, and further formed a two-dimensional layer parallel to the ab plane by fastener effect of trialkylated ligands. Magnetic susceptibility measurement of 1 showed the antiferromagnetic interactions through mu-oxo bridge, and the best fits for their behavior gave the following parameters: J=-12.7cm(-1), g=2.