高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (2): 222.

• 论文 • 上一篇    下一篇

柄型金属有机化合物(Ⅳ)——四甲基二硅桥连取代环戊二烯基钛和锆化合物的合成及催化乙烯聚合

孙秀丽, 王佰全, 徐善生, 周秀中, 赵健, 胡友良   

  1. 1. 南开大学化学系, 天津 300071;
    2. 中国科学院化学研究所, 北京 100080
  • 收稿日期:1999-03-17 出版日期:2000-02-24 发布日期:2000-02-24
  • 通讯作者: 王佰全(1968年出生),男,博士,副教授,从事金属有机化学研究.
  • 基金资助:

    国家自然科学基金(批准号:29734142)资助

ansa-Metallocene Complexes(Ⅳ)——Synthesis, Structure and Application in Ethylene Polymerization of Sila-bridged Substituted Cyclopentadienyl Titanium and Zirconium

SUN Xiu-Li, WANG Bai-Quan, XU Shan-Sheng, ZHOU Xiu-Zhong, ZHAO Jian, HU You-Liang   

  1. 1. Department of Chemistry, Nankai University, Tianjin 300071, China;
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:1999-03-17 Online:2000-02-24 Published:2000-02-24

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摘要： 四甲基二硅桥连取代环戊二烯基配体相继与丁基锂及MCl4·2THF作用,生成四甲基二硅桥连取代环戊二烯基钛和锆化合物(Me2SiSiMe2)(C5H4R)(C5H4R')MCl2[R=H,R'=t-Bu,M=Ti(1),Zr(2),Hf(3);R=H,R'=Me,M=Ti(4);R=R'=Me,M=Ti(5),Zr(6)].通过元素分析、MS和1HNMR谱表征了化合物的分子结构,并通过X射线衍射分析测定了化合物1的晶体结构.研究了在甲基铝氧烷(MAO)的助催化下,化合物1-3和6对乙烯聚合的催化性能。

关键词: 柄型金属茂化合物, 硅桥连, 钛, 锆, 烯烃聚合催化剂

Abstract: Tetramethyldisilane-bridged substituted cyclopentadienyl ligands react with n-butyl lithium and MCl4·2THFto give tetramethyldisilane-bridged substituted cyclopentadienyl metallocene dichlorides(Me2SiSiMe2)(C5H4R)(C5H4R')MCl2[R=H, R'=t-Bu, M=Ti(1), Zr(2), Hf(3); R=H, R'=Me, M=Ti(Ê); R=R=Me, M=Ti(5), Zr(6)]. Complexes 16 were characterized by 1H NMR, mass spectra and elemental analyses. The crystal structure of 1 was determined by X-ray diffraction analysis. The complexes 1_3 and 6 were used for the polymerization of ethylene after activation with methyl aluminoxane(MAO).

Key words: ansa-Metallocene, Sila-bridged, Titanium, Zirconium, Catalyst for polymerization of ethylene

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