Synthesis, structure and luminescence of a new series of rigid–flexible lanthanide coordination polymers constructed from benzene sulfonic acid and glutaric acid

A new series of rigid–flexible lanthanide coordination polymers, namely, [Eu(BSA)(glu)(H2O)2]·H2O (Ln = Eu(1), Sm(2), Ce(3), Pr(4), Nd(5)); H2glu = glutaric acid, HBSA = benzene sulfonic acid), have been constructed by a solution synthesis method from the self-assembly of the lanthanide ions (Ln3+) with the flexible aliphatic dicarboxylate glutaric and the rigid aromatic benzene sulfonic acid. All of them were characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. X-ray single crystal analyses reveal that they crystallize in monoclinic, space group P21/n, possessing 2D net-structures. In addition, the phase purities of the bulk samples were identified by X-ray powder diffraction. The thermogravimetric analysis of 1 and photoluminescent properties of 1 and 2 were investigated in detailed.

Graphical abstractA new series of lanthanide coordination polymers with rigid benzene sulfonic acid and flexible glutaric acid ligands have been synthesized by solution preparation method to have a deep insight of the crystal chemical systematics of this family of compounds. The thermogravimetric analysis and photoluminescent properties are investigated in detail.Figure optionsDownload full-size imageDownload as PowerPoint slide