高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (8): 999.

• 论文 • 上一篇    下一篇

稀土氮杂大环配合物的研究(Ⅰ)--Na[Er(DOTA)·H2O]·3H2O的合成与晶体结构

金天柱1, 王晓青1, 徐光宪1, 马喆生2, 凌红2   

  1. 1. 北京大学稀土化学研究中心, 北京, 100871;
    2. 中国地质大学, 北京
  • 收稿日期:1990-08-03 出版日期:1991-08-24 发布日期:1991-08-24
  • 通讯作者: 金天柱
  • 基金资助:

    国家自然科学基金

Studies on Rare Earth Complexes of Polyaza Polycarboxylic Macrocycle (Ⅰ)--Syntheses and Crystal Structure of Na[Er(DOTA)H2O]·3H2O Complex

Jin Tian-zhu1, Wang Xiao-qing1, Xu Guang-xian1, Ma Zhe-sheng2, Ling Hong2   

  1. 1. Research Centre of Rare Earth Chemistry, Peking University, Beijing, 100871;
    2. University of Geoscience of China, Beijing
  • Received:1990-08-03 Online:1991-08-24 Published:1991-08-24

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摘要： 合成了1,4,7,10-四氮杂-环十二烷-1,4,7,10-四乙酸(H4DOTA)配体,在水溶液中培养了Na[Ln(DOTA)·H2O]·3H2O(Ln=Er,Yb)配合物单晶,测定了其热谱和红外光谱,用X射线衍射方法测定了Na[Er(DOTA)·H2O]·3H2O的晶体结构,属正交晶系,空间群P212121,Z=4,晶胞参数:α=1.5795(8)nm,b=1.5777(8)nm,c=0.9142(5)nm,V=2.278(3)nm3,配合单元中铒为九配位,其配位多面体为单冠四方反棱柱体。

关键词: 稀土, 氮杂大环多羧酸, 晶体结构

Abstract: The complexes, Na[Ln(DOTA)H2O]·3H2Owere synthesized in aqueous solution (Ln = Er, Yb; H4DOTA =1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid).The crystal structure of Na [Er (DOTA) H2O]·3H2O was determined by four-circle X-ray diffractometer. The crystal is orthorhombic with space group P212121The cell parameters are as follows; a=l. 5795(8) nm, 6=1. 5777(8) nm, c=0. 9142(5) nm, V = 2. 278(3) nm3, Z=4.In the crystal the Er(Ⅲ) ion is coordinated by four nitrogen atoms and four oxygen atoms from DOTAand one oxygen atom from water, so that the coordination number of Er(Ⅲ) is nine, taking a monocapped antisquare prism arrangement.

Key words: Rare earth, Polyaza polycarboxylic macrocycle, Crystal structure

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