Binuclear tetra-acetate bridged Gd(III) complex [Gd2(μ2-O2CMe)4(H2L)2](ClO4)2·2H2O·2MeOH (H2L = bis(5-methylimidazol-4-yl-methylideneaminopropyl)methylamine): Synthesis, structure, and magnetic properties

Abstract A binuclear tetra-acetate bridged Gd III complex [Gd 2 ( μ 2 -O 2 CMe) 4 (H 2 L) 2 ](ClO 4 ) 2 ·2H 2 O·2MeOH was synthesized, where H 2 L = bis(5-methylimidazol-4-yl-methylideneaminopropyl)methylamine. The linear polydentate ligand H 2 L functions as a binding group to two Gd III ions. Two Gd III ions are bridged by two acetate in η 1 : η 1 : μ 2 fashion and other two in η 2 : η 1 : μ 2 fashion. The Gd III ⋯Gd III distance of 3.920(6) A is shorter than 4.183(1) A of the bis-acetate bridged Gd III complex [{Gd III (O 2 CMe) 3 (H 2 O) 2 } 2 ]·4H 2 O. A weak anti-ferromagnetic Gd III –Gd III interaction was observed.