A Series of Three-Dimensional Lanthanide-Rigid-Flexible Frameworks: Synthesis, Structure, and Luminescent Properties of Coordination Polymers with 2,5-Pyridine Dicarboxylic Acid and Adipic Acid

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• 作者：Chun-Guang Wang^&#8224 ; ; Yong-Heng Xing*^&#8224 ; ; Zhang-Peng Li^&#8224 ; ; Jing Li^&#8224 ; ; Xiao-Qing Zeng^‡ ; ; Mao-Fa Ge^‡ ; ; Shu-Yun
• 刊名：Crystal Growth & Design
• 出版年：2009
• 出版时间：March 4, 2009
• 年：2009
• 卷：9
• 期：3
• 页码：1525-1530
• 全文大小：311K
• 年卷期：v.9,no.3(March 4, 2009)
• ISSN：1528-7505

文摘

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.