中华医学超声杂志

应用化学 ›› 1991, Vol. 0 ›› Issue (5): 81-84.

• 研究简报 • 上一篇    下一篇

π-烯丙基稀土配合物的合成、结构及其催化烯烃聚合反应机理的研究 Ⅰ.LiLn(π-C3H5)4·nD的合成和结构表征

李凤富, 金鹰泰, 裴奉奎, 王佛松   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-09-17 修回日期:1991-05-14 出版日期:1991-10-10 发布日期:1991-10-10

SYNTHESES AND CHARACTERIZATION OF THE π-ALLYL-RARE EARTH COMPLEXES AND STUDIES ON THE MECHANISM OF OLIFEN POLYMERIZATLONⅠ.SYNTHESIS AND CHARACTERIZATION OF LiLn(π-C3H5)4·nD

Li Fengfu, Jin Yingtai, Pei Fengkui, Wang Fosong   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-09-17 Revised:1991-05-14 Published:1991-10-10 Online:1991-10-10

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摘要： 1970年Coutts[1]成功地合成了第一个π-烯丙基稀土配合物(C5H5)2ScC3H5。但由于其稳定性差仅有几篇报道[1,2]。1987年黄祖恩等[2 b]报道了Li2Ce(C3H5)5·3D(D为二氧六环)的晶体结构。1991年吴文玲等[3]报道了第二个π-烯丙基稀土配合物(C3H5)2CeCl5Mg2(tmed)2的晶体结构。

关键词: 烯丙基稀土配合物, 合成晶体结构

Abstract: Seven π-allyl-rare earth complexes were synthesized by reacting anhydrous lanthanidethichloride with C3H5Li at 1:4 mol ratio in THF-ether solution.The complexes with generalformula LiLn(C3H5)4·nD(Ln=La, n = 3; Ln = Ce, Pr, Nd, Sm, Gd, n = 2; Ln = Y, n= 2.5;D= dioxane) Were characterized by clemental analyses and IR spectra.The single crystalof LiCe(C3H5)4·4D complex was obtained and its structure was determined by X-ray diffr-action at 233K.The crystal belongs to crthorhombic system with space group I212121, a =11.325(3)Å, b = 16.645(5)Å, c = 19.605(5)Å, α=β=γ= 90°; v = 3695.49Å3; Z = 4.

Key words: allyl-rare earth complex, synthesis, crystal structure

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