Abstract
Three new coordination polymers with formula [Gd(bta)(H2O)·1.39H2O] n (1), [Dy(bta)(H2O)·1.35H2O] n (2) and [Y(bta)(H2O)2·0.5H2O] n (3) were synthesized by using corresponding rare earth nitrates and 1,3,5-benzenetriacetic acid (H3bta) under hydrothermal/solvothermal reaction conditions, and characterized by single-crystal X-ray diffraction. In these complexes, the carboxylate groups of bta3− adopt different coordination modes, namely one carboxylate group adopts μ2-η1:η1-bridging and each of the other two carboxylate groups adopts μ2-η2:η1-bridging coordination modes in 1 and 2, and one carboxylate group adopts a μ2-η2:η1-bridging coordination mode and each of the other two carboxylate groups adopts a μ2-η1:η1-bridging mode for the major component and one carboxylate group adopts a μ2-η2:η1-bridging coordination mode, one has a μ2-η1:η1-bridging mode and the third has a monodentate mode for the minor component in 3. The magnetic properties of the complexes 1 and 2 were investigated in the temperature range of 1.8–300 K.
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