中华医学超声杂志

应用化学 ›› 1989, Vol. 0 ›› Issue (6): 67-70.

• 研究简报 • 上一篇    下一篇

Y-Al双金属稀土配合物的合成和晶体结构

金鹰泰, 林永华, 金松春, 胡刚, 李振祥, 张喜田   

  1. 中国科学院长春应用化学研究所稀土物理化学实验室
  • 收稿日期:1988-12-30 修回日期:1989-06-07 出版日期:1989-12-10 发布日期:1989-12-10
  • 基金资助:
    国家自然科学基金

SYNTHESIS AND CRYSTAL STRUCTURE OF BIMETALLIC YTTRIUM COMPLEX

Jin Yingtai, Lin Yonghua, Jin Songchun, Hu Gang, Li Zhenxiang, Zhang Xitian   

  1. The Laboratory of Chemistry and Physics of Rare Earth, Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1988-12-30 Revised:1989-06-07 Published:1989-12-10 Online:1989-12-10

PDF

426

被引次数

3

摘要： 稀土化合物和烷基铝反应的研究,不仅对揭示f轨道的本质[1]且对阐明稀土配位催化聚合烯烃的催化剂结构[2]都有重要意义。Grcco等[3]曾报道C8H8Ce(μ-O-i-C3H7)2 Al(C2H5)2配合物,但尚未见晶体结构数据。 本文介绍了一种新的Y-Al双金属配合物的合成和培养晶体的方法。用四圆衍射仪确定了它的晶体结构,并用1H NMR、ESCA等方法研究了配合物中钇的价态。

关键词: 双金属稀土配合物, 钇配合物, 晶体结构, 钇的价态, 簇配合物

Abstract: The synthesis and growth of crystal of a new bimetallic yttrium complex are presented in this is paper. The crystal structure of the complex, [(CF3CO2)3YA1(C2H5)2·2THF]2,was determined by a four circlc diffractometer. The erystals belong to monoclinic system with space group P21/n,a=10.173 Å,b=18.713 Å,c=14.704 Å,β=102.318°,V=2734.43 Å.Least square refinement has led to a final R of 0.070,Rw=0.064. The Y-O(PF3CO2) (THF)average distance 2.323(2.451) Å. The Al-O(CF3CO2) and Al-C(C2H5) distances average 1.840,1.998 Å respectively. The valence state of the yttrium is discussed based on the data of 1H-NMR and ESCA results. The Y-Y bond length indicated that the complex likely belongs to a cluster compound.

Key words: Bimetallic rare earth complex, Yttrium complex, Crystal structure, Valence state of yttrium, Cluster complex

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