J4 ›› 2010, Vol. 48 ›› Issue (03): 495-498.

• 化学 • 上一篇    下一篇

稀土配位聚合物[Pr(2,5-pdc)(OH)(H2O)2]·H2O的合成、 结构及热稳定性

谢妍1, 邢永恒1, 王卓1, 赵海燕1, 王春光1, 曾小庆2, 葛茂发2   

  1. 1. 辽宁师范大学 化学化工学院, 辽宁 大连 116029|2. 中国科学院 化学研究所, 北京 100190
  • 收稿日期:2009-07-14 出版日期:2010-05-26 发布日期:2010-05-19
  • 通讯作者: 邢永恒 E-mail:yhxing2000@yahoo.com

Crystal Structure and Thermal Stability of a New LanthanideCoordination Polymer [Pr(2,5-pdc)(OH)(H2O)2]·H2O

XIE Yan1, XING Yongheng1, WANG Zhuo1, |ZHAO Haiyan1,WANG Chunguang1, ZENG Xiaoqing2, GE Maofa2   

  1. 1. College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, Liaoning Province, China;2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2009-07-14 Online:2010-05-26 Published:2010-05-19
  • Contact: XING Yongheng E-mail:yhxing2000@yahoo.com

摘要:

采用水热方法合成一种新型的稀土有机配合物[Pr(2,5-pdc)(OH)(H2O)2]·H2O, 通过元素分析、 红外光谱及X射线衍射方法对该配合物
进行结构表征. 结构分析表明: 标题配合物属于单斜晶系; P21/c空间群; 晶胞参数a=0.935 0(4) nm, b=1.615 8(6) nm, c=0.830 9(3) nm, α=γ= 90.000°, β= 94.078(7)°, V=1.252 1(9) nm3, Z=4. 配合物中镨离子通过μ2-OH桥连接形成双核构筑单元, 进一步通过2,5-pdc中的羧基氧原子连接形成三维结构.

关键词: 镨(Ⅲ)配位聚合物, 2,5吡啶二羧酸, 三维结构, 水热合成

Abstract:

A new lanthanideorganic framework [Pr(2,5-pdc)(OH)(H2O)2]·H2O was synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectrometry and single crystal X-ray diffraction. X-ray diffraction analyses reveal that the title complex was crystallized in a monoclinic space group P21/c, with a=0.935 0(4) nm, b=1.615 8(6) nm, c=0.830 9(3) nm, α=γ=90.000°, β=94.078(7)°, V=1.252 1(9) nm3, Z=4. The complex possesses binuclear units constructed via OH- bridging, and the binuclear units are further connected by carboxyl oxygen atoms of 2,5-pdc ligands to form a 3D framework.

Key words: praseodymium (Ⅲ) coordination polymer, pyridine-2,5-dicarboxylic acid, 3D structure, hydrothermal synthesis

中图分类号: 

  • O611