高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (4): 519.

• 论文 • 上一篇    下一篇

高氯酸二甘氨酸十二水合二铒的晶体结构

赵建军, 金天柱   

  1. 北京大学稀土材料化学及应用国家重点实验室, 北京 100871
  • 收稿日期:1995-05-30 出版日期:1996-04-24 发布日期:1996-04-24
  • 通讯作者: 金天柱
  • 作者简介:赵建军,男,27岁,硕士研究生.
  • 基金资助:

    国家攀登计划基金

Synthesis and Crystal Structure of a Diglycine Dodecaaquo Dierbium Perchlorate

ZHAO Jian-Jun, JIN Tian-Zhu   

  1. State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871
  • Received:1995-05-30 Online:1996-04-24 Published:1996-04-24

摘要: 在水溶液中合成了甘氨酸铒配合物[Er2(Gly)2(H2O)12](ClO4)6·4H2O单晶,并测定了其晶体结构。该晶体属单斜晶系,P21/n空间群。晶胞参数:a=1.0571(2)nm,b=1.0837(2)nm,c=1.7728(4)nm,β=90.09(3)°,V=2.0309(7)nm2,Z=2,Dc=2.239g/cm3.最终偏差因子R=0.055,Rw=0.061.每2个Er3+离子由2个甘氨酸羧基桥联成双核结构。Er3+离子还与6个水分子的氢原子配位,形成畸变的四方棱柱型配位多面体。

关键词: 铒配合物, 甘氨酸, 晶体结构

Abstract: The title complex[Er2(Gly)2(H2O)12](ClO4)6.4H2) was synthesized.It's crystal structure was determined by four-circle X-ray diffractometer.The crystal is monoclinic with space group P21/n.The unit cell parameters are as follows:a=1.0571(2)nm,b=1.0837(2)nm,c=1.7728(4)nm,β=90.09(3)°,V=2.0309(7)nm3,Z=2,Dc=2.239 g/cm3.The final deviation Rand Rw is equal to 0.055 and 0.061 respectively.The two erbium ions in[Er2(Gly)2(H2O)12(ClO4)6·4H2Oare connected with two bridging carboxyl groups.Six water molecules are coordinated to each erbium ion, Therefore, there are eight oxygen atoms coordinated to each erbium, forming a distorted square antiprism arrange ment.

Key words: Erbium complex, Glycine, Crystal structure

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