Synthesis and Crystal Structures of Sm(III) Complex Assembled from Pyridine-Carboxylate

Abstract

A new pyridinecarboxylato-bridged coordination polymers {[Sm(3,4-pbc)₃(H₂O)₂]·H₂O}_n{1} (3,4-pbc=3-pyrid-4-ylbenzoic acid)has been synthesized and structurally characterized by elemental analysis, IR and X-ray diffraction. Single crystal X-ray analyses reveal that the carboxylate groups of 3,4-pbc ligands adopt two coordinated mode: bis-monodentate (μ₂-h¹:h¹) and bidentate chelating (μ₁-h¹:h¹). Hydrogen bonding interactions are found in compound {[Sm(3,4-pbc)₃(H₂O)₂]·H₂O}_n, which further extend and stabilize the coordination motifs.