高等学校化学学报

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (6): 559.

• 研究简报 • 上一篇    下一篇

硝酸铈·18-冠-6配合物的晶体结构和分子结构

姚精文, 罗保生, 王静秋, 张绍辉   

  1. 武汉大学化学系
  • 收稿日期:1986-02-06 出版日期:1987-06-24 发布日期:1987-06-24

Crystal and Molecular Structure of Ce(NO3)3·18-Crown-6 Complex

Yao lingwen, Luo Baosheng, Wang Jingqiu, Zhang Shaohui   

  1. Department of Chemistry, Wuhan University, Wuhan
  • Received:1986-02-06 Online:1987-06-24 Published:1987-06-24

PDF (PC)

摘要： 18-冠-6硝酸铈冠醚配合物的合成工作文献已有过报道,但有关结晶学数据目前还没有人做过,本文的目的是通过对这一配合物的晶体结构测定,并与同类离子配合物的结构进行比较以进一步了解稀土离子与冠醚络合的空间结构情况,为更深入的研究提供依据。

Abstract: Complex Ce(NO3)3·18-crown-6 crystallizes in space group Pbca with α-12.223(2),b=15.617(3),c=21.806(4)Å, Z=8. 3419 independent reflexions were collected on Enraf-Nonius CAD4 diffractometer,of which 2972 with I>3σ1. The structure was solved by Patterson method and subsequent Fourier syntheses. Block-matrix least-squares refinement with parameters for all atoms led to R =0.025 and Rw=0.032. The Ce3+ion has a distorted twelve-coordination, six coordinate Oxygens are from the crown ring.

TrendMD: