Abstract
A new series of lanthanide coordination polymers, namely, [Ln(ad)0.5(2,5-pydc)(H2O)] (Ln = Eu (1), Pr (2), Nd (3), Sm (4), Tb(5); H2ad = adipic acid; 2,5-H2pydc = 2,5-pyridine dicarboxylic acid), have been synthesized hydrothermally from the self-assembly of the lanthanide ions (Ln3+) with the flexible adipic dicarboxylate ligand and the rigid 2,5-pyridine dicarboxylic acid ligand. All of them were characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. Structural analyses reveal that all five complexes have intricate three-dimensional net-structures, and in these complexes, they were crystallized in monoclinic space group P21/c. 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 5 are discussed in detail.
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