应用化学 ›› 1989, Vol. 0 ›› Issue (3): 68-70.

• 研究简报 • 上一篇    下一篇

SmCl3(DME)·2THF的晶体结构

金钟声, 聂国军, 胡宁海, 陈文启   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1988-11-19 修回日期:1988-05-20 出版日期:1989-06-10 发布日期:1989-06-10

CRYSTAL STRUCTURE OF SmCl3 (DME)·2THF

Jin Zhongsheng, Nie Guojun, Hu Ninghai, Chen Wenqi   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1988-11-19 Revised:1988-05-20 Published:1989-06-10 Online:1989-06-10

摘要: 我们曾测定NdCl3·4THF的晶体结构,并研究了它对双烯烃聚合的活化作用.本文报导含二甲氧基乙烷(Dimethoxyethane,简称DME)的SmCl3(DME)·2THF的制备及其单晶结构,以利于对稀土催化双烯烃聚合反应机理作出更好的解释.

关键词: 二甲氧基乙烷与钐的配合物, χ-射线衍射法, 晶体结构

Abstract: The crystal structure of the title compound in which DME = Dimethoxyethane wasdetermined using x-ray diffractometer. The complex crystallizes in monoclinic space group P21/a with Z = 4. Lattice parameters are: a = 13.547(8), b = 8.607(4), c = 16.029(9)Å,β= 90.35(5)°. The crystal structure was determined by Patterson and Fourier techniques andrefined by least-squares to a final value R = 0.0443. The samarium(Ⅲ) ion is 7-coordinate,being bonded to three chlorine atoms, two oxygen atoms of two THF and two oxygen atemsof DME. The Sm-Cl distances are in the range 2.647-2.674Å. The Sm-O distances are inthe range 2.465-2.504Å.

Key words: Complex of samarium with dimethoxyethane, Crystal structure, x-Ray, diffractometry