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化学学报
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化学学报 ›› 1997, Vol. 55 ›› Issue (7): 672-677. 上一篇    下一篇

研究论文

三乙四胺六乙酸钆配合物的合成及晶体结构

陈德福;杨维春;王瑞瑶;金天柱   

  1. 北京大学化学系稀土化学研究中心;北京大学稀土材料化学及应用国家重点实验室
  • 发布日期:1997-07-15

Synthesis and crystal structure of gasdolinium complex with triethylenetetraaminehexaacetic acid

CHEN DEFU;YANG WEICHUN;WANG RUIYAO;JIN TIANZHU   

  • Published:1997-07-15

PDF

497

被引次数

16

在水溶液中合成了三乙四胺六乙酸钆配合物:K4[Gd2(HTTHA)2].14H2O的单晶, 并测定了其结构。晶体属单斜晶系, P21/n空间群。晶胞参数: a=1.1266(5)nm,b=2.5686(4)nm, c=2.2076(8)nm, β=102.50(3)°,V=6.237(6)nm^3, Z=4, Dc=1.812g/cm^3。配合物是比核分子,每个钆离子与来自同一个三乙四胺六乙酸的3个氮原子和4个羧基氧原子, 来自另一个三乙四胺六乙酸的2个羧基氧原子配位,形成三冠三角棱柱型配位多面体。

关键词: 晶体结构, 钆络合物, ＴＴＨＡ Ｐ

The gadolinium complex with triethylenetetraaminehexaacetic acid (abbreviated as H6TTHA), K4[Gd2(HTTHA)2].14H2O was synthesized in aqueous solution, and its crystal structure was determined by X-ray diffraction method. The crystal is monoclinic, space group P21/n, with a=1.1266(5)nm, b=2.5686(4)nm, c=2.2076(8)nm, β=102.50(3)°, V=6.237(6)nm^3, Z=4, Dc=1.812g/cm^3. The complex is a binuclear molecule, each gadolinium ion is coordinated by three nitrogen atoms and four carboxyl oxygen atoms from one TTHA, and two carboxyl oxygen atoms from another TTHA, forming a coordination polyhedron of tricapped trigonal prism.

Key words: CRYSTAL STRUCTURE, GADOLINIUM COMPLEX, TTHA P

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