Abstract

A binuclear tetra-acetate bridged GdIII complex [Gd2(μ2-O2CMe)4(H2L)2](ClO4)2·2H2O·2MeOH was synthesized, where H2L=bis(5-methylimidazol-4-yl-methylideneaminopropyl)methylamine. The linear polydentate ligand H2L functions as a binding group to two GdIII ions. Two GdIII ions are bridged by two acetate in η1:η1:μ2 fashion and other two in η2:η1:μ2 fashion. The GdIII⋯GdIII distance of 3.920(6)Å is shorter than 4.183(1)Å of the bis-acetate bridged GdIII complex [{GdIII(O2CMe)3(H2O)2}2]·4H2O. A weak anti-ferromagnetic GdIII–GdIII interaction was observed.

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