Rigid and Flexible Lanthanide Complexes with an Infinite Ln¨CO¨CLn Framework: Synthesis, Structure and Properties

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• 作者：Zhuo Wang ; Feng-Ying Bai ; Yong-Heng Xing ; Yan Xie ; Xiao-Qing Zeng ; Mao-Fa Ge and Shu-Yun Niu
• 关键词：Lanthanide complexes ; 2 ; 5 ; Pyridine dicarboxylic acid ; Glutaric acid ; Crystal structures ; Thermal stability
• 刊名：Journal of Inorganic and Organometallic Polymers and Materials
• 出版年：2010
• 出版时间：June, 2010
• 年：2010
• 卷：20
• 期：2
• 页码：242-249
• 全文大小：673.2 KB

文摘

Abstract A series of new lanthanide coordination polymers, Ln(pydc)(Hglu) (Ln = Nd(1), Pr(2); H₂glu = glutaric acid; 2,5-H₂pydc = 2,5-pyridine dicarboxylic acid), have been synthesized hydrothermally from the self-assembly of the lanthanide ions (Ln3+) with rigid 2,5-pyridine dicarboxylic acid and flexible glutaric acid. They were characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Structural analyses reveal that both of the complexes were crystallized in monoclinic space group P2₁/c and have intricate 3D net-structures, which contain an infinite 1D Ln–O–Ln chain structure. In addition, the phase purities of the bulk samples were identified by X-ray powder diffraction. The thermogravimetric analysis of 1 is discussed in detail.