高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (8): 1105.

• 论文 •    下一篇

钕钇异核谷氨酸配合物的合成及晶体结构

王晓青1, 金天柱1, 金庆日1, 徐光宪1, 章士伟2   

  1. 1. 北京大学稀土化学研究中心, 北京, 100871;
    2. 北京大学物理化学研究所
  • 收稿日期:1993-10-12 修回日期:1994-01-31 出版日期:1994-08-24 发布日期:1994-08-24
  • 通讯作者: 金天柱.
  • 作者简介:王晓青,女,28岁,博士研究生.
  • 基金资助:

    国家攀登计划基金

Synthesis and Crystal Structure of a Heteronuclear Complex of Neodymium-Yttrium with Glutamic Acid

WANG Xiao-Qing1, JiN Tian-Zhu1, JIN Qing-Ri1, XU Guang-Xian1, ZHANG Shi-Wei2   

  1. 1. Research Centre of Rare Earth Chemistry, Peking University, Beijing, 100871;
    2. Institute of Physical Chemistry, Peking University, Beijing
  • Received:1993-10-12 Revised:1994-01-31 Online:1994-08-24 Published:1994-08-24

PDF (PC)

被引次数

11

摘要： 在水溶液中合成了钕钇异核谷氨酸配合物[(Nd4/3Y2/3(Glu)2(H2O)8)4](ClO4)16·10H2O的单晶,并测定其结构。晶体属单斜晶系,P21空间群,晶胞参数：α=1.1037(5)nm,b=1.6710(5)nm,c=2.0086(10)nm,β=102.80(4)°,V=3.612(3)nm3,Z=1,Dc=2.079g/cm3.最终偏差因子R=0.058,钕和钇对中心位置的占有率分别为2/3和1/3.每个谷氨酸的远离氨基的羧基以三齿(螯合配位加上1个氧桥)与中心离子配位,故钕和钇离子的配位数为9,形成三角十四面体型配位多面体。配合物为由双核联络成的网状分子。

关键词: 钕钇异核配合物, 谷氨酸, 晶体结构

Abstract: The complex, [Nd4/3Y2/3(Clu)2(H2O)8)4](ClO4)16·10H2O was synthesized in aqueous solution and its crystal structure was determined by X-ray diffraction method. The crystal is monoclinic with space group P21.The cell parameters are:α=1.1037(5)nm, b=1. 6710(5)nm, c=2.0086(10)nm, β=102.80(4)°, V=3.612(3)nm3, Z=1, Dc=2.0799/cm3. The final Ris 0.058.The complex molecule is an infinite layer built from binuclear polymer. For each central position, the occupation ratio of Nd and Yare 2/3 and 1/3, respectively.The carboxyl group of each glutamic acid that is far from NH2 is coordinated in terms of tridentate with the central ions by a bridging oxygen atom.So the coordination number is 9, forming a trigontetradecahedron arrangement.

Key words: Heteronuclear complex of Nd-Y, Glutamic acid, Crystal structure

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