中华医学超声杂志

应用化学 ›› 1986, Vol. 0 ›› Issue (1): 46-50.

• 研究论文 • 上一篇    下一篇

硝酸铕与含氮冠醚(2,2)配合物的分子和晶体结构

刘世昌1, 杨光弟2, 樊玉国2, 金钟声3, 金松春3, 朱天培3   

  1. 1. 内蒙古师范大学;
    2. 吉林大学理论化学研究所;
    3. 中国科学院长春应用化学研究所
  • 收稿日期:1985-07-29 修回日期:1985-09-18 出版日期:1986-02-10 发布日期:1986-02-10
  • 通讯作者: 金钟声

THE MOLECULAR AND CRYSTAL STRUCTURE OF THE COMPLEX OF AZACROWN(2,2)WITH EUROPIUM NITRATE

Liu Shichang1, Yang Gangdi2, Fan Yuguo2, Jin Zhongsheng3, Jin Songchun3, Zhu Tianpei3   

  1. 1. Department of Chemistry, Inner Mongolia Normal University, Huhehaote;
    2. Institute of Theoretical Chemistry, Jilin University, Changchun;
    3. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1985-07-29 Revised:1985-09-18 Published:1986-02-10 Online:1986-02-10

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摘要： 硝酸铕与含氮冠醚(2,2)配合物晶体属单斜晶系,空间群为P21/n,晶胞参数为a=16.2745(81):b=11.5237(25),c=12.5658(60)Å,β=112.180(34)°,Z=4.强度数据由四圆衍射仪收集到独立的可观察反射点数为2892条,采用MoKa辐射。结构参数的修正采用方块矩阵最小二乘法,R=0.042.得出铕离子位于环的平均平面,两个硝酸根分别位于环的两侧。铕的配位数为10。铕离子与四个氧原子和二个氮原子以及二个双齿NO3-键合,构成配合物的阳离子部分,晶体的另一部分为阴离子NO3-。

Abstract: The crystals of the complex of azacrown (2,2) with Eu(NO3)3 are monoclinic sys-tem with space group P21/n and parameters of unit cell a=16.2745(18), b=11.5237(25),c=12.5658(60)Å, β=112.180(34)°, Z=4.The diffraction data were collected on the Nico-let XRD R3 four-circle diffractometer using MoKα radiation. Its structure was solved by heavy-atom method. The structure parameters were refined by means of block-diagonal matrix least-square method, R=0.042. The coordination number of the europium ion is ten. The europium ion is in the mean plane of the ring and linked to 4 oxygen atoms,2 nitrogen atoms of the crown and 2 nitrates forming cation part of the complex. Two nitrates are localized in each side of the crown ring.

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