[Ti(η⁵-C5H4SiMe2OMe)(OMe)3] | 1421487-34-4

• 英文名称: [Ti(η⁵-C5H4SiMe2OMe)(OMe)3]
• CAS: 1421487-34-4
• 化学式: C₁₁H₂₂O₄SiTi
• 分子量: 294.259
• InChiKey: JBUBPZMWWLCXSJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  甲醇 、 Ti(η(5)-C5H4SiMe2Cl)Cl3 在 三乙胺 作用下， 以 乙醚 为溶剂， 反应 24.0h， 以26%的产率得到[Ti(η⁵-C5H4SiMe2OMe)(OMe)3]
  参考文献：
  名称：

  Synthesis, characterization and styrene polymerization behavior of alkoxysilyl-substituted monocyclopentadienyltitanium(IV) complexes

  摘要：

  Trimethylsilylcyclopentadienes bearing alkoxysilyl functionality, C5H4(SiMe3)(SiMe2OR), where R is Me (2), i-Pr (3) and t-Bu (4), were prepared and characterized. Methoxy derivative 2 reacts with TiCl4 giving unstable [Ti(eta(5)-C5H4SiMe2OMe)Cl-3] (5), which is slowly transformed to chlorosilyl complex [Ti(eta(5)-C5H4SiMe2Cl)Cl-3] (6) and a mixture of cyclopentadienyltitanium(IV) methoxides on heating. Fully alkoxylated derivatives of the type [Ti(eta(5)-C5H4SiMe2OR)(OR)(3)] [R = Me (7), i-Pr (8), t-Bu (9)] and {Ti[eta(5)-C5H4SiMe(OMe)(2)](OMe)(3)} (10), were synthesized in low-to-moderate yields from respective chlorosilylcyclopentadienyltitanium trichlorides. All prepared alkoxysilyl compounds were characterized by spectroscopic techniques including Si-29 NMR. Polymerization activity of 7-10 in the presence of methylaluminoxane was determined and compared with [TiCp(OMe)(3)] and corresponding trimethylsilyl-substituted compounds [Ti(eta(5)-C5H4SiMe3)(OR)(3)], where R is Me, i-Pr and t-Bu. The highest conversion of styrene has been observed in systems based on [Ti(eta(5)-C5H4SiMe3)(OMe)(3)], [TiCp(OMe)(3)] and [Ti(eta(5)-C5H4SiMe3)(OBut)(3)], respectively. The new alkoxysilyl compounds 7-10 have significantly lower activity of 500-1800 kg of polystyrene/(mol Ti mol styrene h). All prepared polystyrenes showed both high melting point and high degree of syndiotacticity as determined by DSC and NMR measurements. (C) 2012 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2012.11.040