高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (1): 77.

• 论文 • 上一篇    下一篇

柄型茂金属化合物(Ⅲ)──四甲基二硅桥连二(1-茚基和四氢茚基)钛和锆化合物的合成及催化乙烯聚合

王佰全1, 徐善生1, 周秀中1, 苏立明2, 冯如2, 贺大为2   

  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:1998-06-16 出版日期:1999-01-24 发布日期:1999-01-24
  • 通讯作者: 王佰全,男,30岁,博士,讲师.
  • 基金资助:

    国家自然科学基金;天津市21世纪青年科学基金

Ansa Metallocene Complexes(Ⅲ)--Synthesis and Application in Ethylene Polymerization of Sila bridged Bis(indenyl and tetrahydroindenyl) Titanium and Zirconium Complexes

WANG Bai-Quan1, XU Shan-Sheng1, ZHOU Xiu-Zhong1, SU LI-Ming2, FENG Ru2, HE Da-Wei2   

  1. 1. Department of Chemistry, Nankai University, Tianjin, 300071;
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080
  • Received:1998-06-16 Online:1999-01-24 Published:1999-01-24

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被引次数

8

摘要： 1,2二(1茚基)四甲基二硅烷相继与丁基锂及MCl4·2THF作用,生成四甲基二硅桥连二(1茚基)钛和锆化合物(Me2SiSiMe2)[Ind]2MCl2[M=Ti(1),Zr(2)].对其进行催化氢化,得到相应的四氢茚基化合物(Me2SiSiMe2)[IndH4]2MCl2[M=Ti(3),Zr(4)].通过元素分析、MS和1HNMR谱表征了化合物的分子结构,并研究了在MAO(MethylAluminoxane)的助催化下,化合物3和4对乙烯聚合的催化性能.同锆化合物4相比,钛化合物3活性较低,但得到聚乙烯的分子量却相当高.催化剂的活性和聚乙烯的分子量都具有明显的温度效应.

关键词: 柄型金属茂化合物, 硅桥连, 钛, 锆

Abstract: Tetramethyldisilane bridged bis(1 indenyl and tetrahydroindenyl)Metal ocene dichlorides(Me2SiSiMe2)Ind2MCl2[M=Ti(1), Zr(2)]and(Me2SiSiMe2)[IndH4]2MCl2[M=Ti(3), Zr(4)]were synthesized.Complexes 1-4 were characterized by 1H NMR, mass spect ra and elemental analyses.Complexes 3 and 4 were used for The polymerization of ethylene after activation with methyl aluminox ane(MAO)at different temperatures and normal pressure.The titanocene 3 shows a lower activity but produces polyet hylene with a higher molecular weight t han zirconocene 4.The catalyst systems show a dependency of the activity and molecular weighton tem perature.

Key words: Ansa Metallocene, Sila bridged, Titanium, Zirconium

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