高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

3D异金属Bi(Ⅲ)-Pr(Ⅲ)配位聚合物的合成、晶体结构和热稳定性

蒋琪英1, 邓洪权1, 钟国清1, 何平1, 胡宁海2   

  1. 1. 西南科技大学材料学院化学系, 绵阳 621010; 2. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:2008-10-04 修回日期:1900-01-01 出版日期:2008-12-10 发布日期:2008-12-10
  • 通讯作者: HU Ning-Hai

Synthesis, Crystal Structure and Thermal Stability of 3D Heterometallic Bi(Ⅲ)-Pr(Ⅲ) Polymer Complex

JIANG Qi-Ying1, DENG Hong-Quan1, ZHONG Guo-Qing1, HE Ping1, HU Ning-Hai2*   

  1. 1. Department of Chemistry, Southwest University of Science and Technology, Mianyang 621010, China;2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2008-10-04 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10
  • Contact: 胡宁海

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被引次数

2

摘要： 在水溶液中合成了双金属配位聚合物({[(NO3)(H2O)3Pr(μ4-Hedta)Bi-(NO3)2]·2H2O}2)n, 并通过元素分析、红外光谱和X射线单晶衍射等手段进行了表征. 该配合物为单斜晶系, P2(1)/n空间群, a=1.26831(18) nm, b=0.82189(12) nm, c=2.3755(3) nm, β=105.055(2)°, R=0.0429, V=2.3913(6) nm3, Z=4. Bi(Ⅲ)-Pr(Ⅲ)间通过配阴离子Hedta3-中4个羧基的桥联作用构建配合物的3D结构. TG-DSC结果表明, 该配合物热分解经历脱水、配体分解以及盐分解过程, 残余物为Bi-Pr-O的三元复合氧化物.

关键词: 异金属配合物, 铋(Ⅲ), 镨(Ⅲ)

Abstract: A new 3D bismuth(Ⅲ)-praseodymium(Ⅲ) heterometallic complex, ({[(NO3)(H2O)3Pr(μ4-Hedta) Bi(NO3)2]·2H2O}2)n(edta=diaminetetraacecarboxylate), was synthesized and characterized by elemental analysis, FTIR, and X-ray diffraction single crystal structure analysis. It crystallizes in the monoclinic system, with space group P2(1)/n, a=1.26831(18) nm, b=0.82189(12) nm, c=2.3755(3)nm, β=105.055(2)°, V=2.3913(6) nm3, Z=4. Bridging Hedta3- anions between Bi atoms and Pr atoms result into a novel infinite 3D network structure. TG-DSC results indicate that thermal decomposition proceeds in several stages, dehydration, pyrolysis of ligand, and finally decomposition of salt.

Key words: Heterometallic complex, Bismuth(Ⅲ), Praseodymium(Ⅲ)

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