zirconium(η5-C5H4(CH2)3OSiMe3)(η5-C5H5)Me2 | 939026-06-9

• 英文名称: zirconium(η5-C5H4(CH2)3OSiMe3)(η5-C5H5)Me2
• CAS: 939026-06-9
• 化学式: C₁₈H₃₀OSiZr
• 分子量: 381.745
• InChiKey: RDLOPHLNLLWBGS-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  zirconium(η5-C5H4(CH2)3OSiMe3)(η5-C5H5)Cl2 、 甲基溴化镁 以 四氢呋喃 为溶剂， 以45%的产率得到zirconium(η5-C5H4(CH2)3OSiMe3)(η5-C5H5)Me2
  参考文献：
  名称：

  Supported modified zirconocene catalyst for ethylene polymerization

  摘要：

  The reactivity of the silyl ether-substituted zirconocene [Zr{eta(5)-C5H4(CH2)(3)OSiMe3}(eta(5)-C5H5)Cl-2] (1) towards dehydroxylated silica was evaluated and comparative studies with respect to the unmodified analogue [Zr(eta(5)-C5H5)(2)Cl-2] (2) were performed. The different reactions were monitored by FT-IR spectroscopy. The resulting materials were activated with MAO and the catalytic systems were evaluated in ethylene polymerization. The catalysts were characterized by elemental analysis as well as by FT-IR and UV-vis spectroscopy. In addition to the classical reaction between Zr-Cl bonds and acidic silanol surface groups, grafting of complex 1 occurs to some extent by reaction between the silyl ether group and reactive siloxane bridges on the silica surface. In contrast, complex 2, as one would expect, only reacts through the Zr-Cl groups. Supporting zirconocene 1 on MAO-modified silica gives rise to a more efficient catalyst. The effects caused by these different grafting reactions, as well as the catalytic activities of the resulting materials, are presented and discussed. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2006.05.055