高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (1): 50.

• 论文 • 上一篇    下一篇

硅桥连双(三甲硅基环戊二烯基)钛化合物的合成及脱硅基反应

王佰全, 徐善生, 周秀中   

  1. 南开大学化学系, 天津 300071
  • 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

Synthesis of Sila bridged Titanocenes and Desilytion Reaction

WANG Bai-Quan, XU Shan-Sheng, ZHOU Xiu-Zhong   

  1. Department of Chemistry, Nankai University, Tianjin, 300071
  • Received:1998-06-16 Online:1999-01-24 Published:1999-01-24

PDF (PC)

被引次数

7

摘要： 硅桥连双(三甲硅基环戊二烯基)双锂盐与TiCl4·2THF反应,生成相应的钛化合物[E(C5H3SiMe3)2]TiCl2[E=Me2SiSiMe2(3),Me2SiOSiMe2(5)],同时还分离到了脱一个三甲硅基的产物[E(C5H4)(C5H3SiMe3)]TiCl2[E=Me2SiSiMe2(4),Me2SiOSiMe2(6)].其中四甲基二硅氧桥连配体更容易发生这种脱硅基反应.通过元素分析、MS和1HNMR谱表征了化合物3-6的分子结构.

关键词: 柄型金属茂化合物, 硅桥连, 茂钛化合物, 脱硅基

Abstract: Reactions of lithiat ed sila bridged ligands LI2[E(C5H3SiMe3)2]with TiCl42T HF lead to The formation of complexes[E(C5H3SiMe3)2]TiCl2[E=Me2SiSiMe2(3), Me2SiOSiMe2(5)]. The unsymmetrical ansat it anocenes[E(C5H4)(C5H3SiMe3)]TiCl2[E=Me2SiSiMe2(4), Me2SiOSiMe2(6)]were also isolated simult aneously as desilylation products.Among Them, disilox ane bridged ligand is easier to occur the desilylation reaction.Complexes 36 were character ized by 1HNMR, mass spectra and elemental analyses.

Key words: Ansa metallocene, Sila bridged, Tit anocene, Desily lation

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