(cyclopentadienyl)(9-fluorenyl)dimethylsilane | 162289-96-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 芴
• 英文名称: (cyclopentadienyl)(9-fluorenyl)dimethylsilane
• 英文别名: Silane, 2,4-cyclopentadien-1-yl-9H-fluoren-9-yldimethyl-；cyclopenta-2,4-dien-1-yl-(9H-fluoren-9-yl)-dimethylsilane
• CAS: 162289-96-5
• 化学式: C₂₀H₂₀Si
• 分子量: 288.464
• InChiKey: JNNJOZXOBOBYLP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.54
• 重原子数：
  21
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  氯化铪 、 (cyclopentadienyl)(9-fluorenyl)dimethylsilane 在 叔丁基锂 作用下， 以 乙醚 、 甲苯 为溶剂， 反应 4.0h， 以9%的产率得到
  参考文献：
  名称：

  原位活化：用茂金属二氯化物形成超高分子量间规聚丙烯的机会和限制

  摘要：

  合成了具有不同桥接基序（C 和 Si）的芴基环戊二烯基C s对称柄型茂金属（M = Zr，Hf）配合物I - IV，随后在丙烯的间规配位聚合中进行了检测。所有复合物活化原位用三异丁基铝（TIBA）和[PH 3 C] [B（C 6 ˚F 5）4，以突出的这样的好处（TrBCF）原位活化，导致与甲基铝氧烷 (MAO) 相比显着更高的分子量和显着提高的生产率。异丙叉桥联的二茂锆Ia (ZrCl 2 [Me 2 C(η 5 -Flu)(η 5 -Cp)]) 表现出高生产率 (80000 kg PP (mol cat h) -1 ) 和立构规整性 ([rrrr] up至 93%) 与中等分子量的聚丙烯 (PP)，而与相应的铪茂Ib (HfCl 2 [Me 2 C(η 5 -Flu)(η 5-Cp)]) 导致较低的生产率和立构规整性，但产生超高分子量聚丙烯 ( M w = 1100 kg mol –1

  DOI：

  10.1021/acs.organomet.1c00397
• 作为产物：
  描述：

  9H-芴-9-基锂 以 四氢呋喃 、 正己烷 为溶剂， 反应 6.0h， 生成 (cyclopentadienyl)(9-fluorenyl)dimethylsilane
  参考文献：
  名称：

  Silylene-bridged fluorenyl-containing ligands and zirconium complexes with C1 and Cs symmetry: general synthesis and olefin polymerization catalysis

  摘要：

  A variety of new silylene-bridged fluorenyl-containing ligands has been synthesized with good yields via a convenient synthetic route. Two dimethylsilylene-bridged (eta(5)-indenyl)(eta(5)-fluorenyl) (1) and (eta(5)-cyclopentadienyl)(eta(5)-fluorenyl) (2) zirconocene dichlorides with C-1 and C, molecular symmetry have also been prepared. Upon activation with methyl aluminoxane, the former produced a polypropylene of high molecular weight, but with low activity and isotacticity. The latter catalyzed non-stereospecific propylene polymerization without any syndiotactic tendency, but with 40 and 20 times greater ethylene and propylene activity respectively than the former catalytic system.

  DOI：

  10.1016/0022-328x(95)00118-a

文献信息

• The synthesis, characterization and polymerization behavior of ansa cyclopentadienyl fluorenyl complexes; the X-ray structures of the complexes [(C13H8)SiR2(C5H4)]ZrCl2 (RMe or Ph)
  作者：Konstantinos Patsidis、Helmut G Alt、Wolfgang Milius、Syriac J Palackal

  DOI：10.1016/0022-328x(95)05788-q

  日期：1996.2

  The preparation and characterization of the ansa metallocene complexes [(C13H8)ER(2)(C5H4)]ZrCl2, [(2,7-(t)Bu(2)C(13)H(5))-SiR(2)(C5H4)ZrCl2 and [(2,7-(t)Bu(2)C(13)H(6))SiR(2)(C13H8)]ZrCl2 (E=Si or Ge; R=Me or Ph) are reported. The crystal structures of [(C(13)H(8)SiR(2)(C5H4)]ZrCl2 (R=Me, or Ph) have been determined and are discussed. The complexes are compared in respect to the polymerization behavior of propylene.
• <i>In Situ</i> Activation: Chances and Limitations to Form Ultrahigh Molecular Weight Syndiotactic Polypropylene with Metallocene Dichlorides
  作者：Lucas Stieglitz、Daniel Henschel、Thomas Pehl、Bernhard Rieger

  DOI：10.1021/acs.organomet.1c00397

  日期：2021.12.27

  molecular weight of polypropylene (PP), whereas the polymerization with the corresponding hafnocene Ib (HfCl2[Me2C(η5-Flu)(η5-Cp)]) resulted in a lower productivity and stereoregularity but yielded ultrahigh molecular weight polypropylene (Mw = 1100 kg mol–1). The backbone in II (HfCl2[Ph2C(η5-Flu)(η5-Cp)]) was associated with a higher productivity and molecular weight, while the syndiotacticity was not affected

  合成了具有不同桥接基序（C 和 Si）的芴基环戊二烯基C s对称柄型茂金属（M = Zr，Hf）配合物I - IV，随后在丙烯的间规配位聚合中进行了检测。所有复合物活化原位用三异丁基铝（TIBA）和[PH 3 C] [B（C 6 ˚F 5）4，以突出的这样的好处（TrBCF）原位活化，导致与甲基铝氧烷 (MAO) 相比显着更高的分子量和显着提高的生产率。异丙叉桥联的二茂锆Ia (ZrCl 2 [Me 2 C(η 5 -Flu)(η 5 -Cp)]) 表现出高生产率 (80000 kg PP (mol cat h) -1 ) 和立构规整性 ([rrrr] up至 93%) 与中等分子量的聚丙烯 (PP)，而与相应的铪茂Ib (HfCl 2 [Me 2 C(η 5 -Flu)(η 5-Cp)]) 导致较低的生产率和立构规整性，但产生超高分子量聚丙烯 ( M w = 1100 kg mol –1
• Silylene-bridged fluorenyl-containing ligands and zirconium complexes with C1 and Cs symmetry: general synthesis and olefin polymerization catalysis
  作者：You-Xian Chen、Marvin D. Rausch、James C.W. Chien

  DOI：10.1016/0022-328x(95)00118-a

  日期：1995.7

  A variety of new silylene-bridged fluorenyl-containing ligands has been synthesized with good yields via a convenient synthetic route. Two dimethylsilylene-bridged (eta(5)-indenyl)(eta(5)-fluorenyl) (1) and (eta(5)-cyclopentadienyl)(eta(5)-fluorenyl) (2) zirconocene dichlorides with C-1 and C, molecular symmetry have also been prepared. Upon activation with methyl aluminoxane, the former produced a polypropylene of high molecular weight, but with low activity and isotacticity. The latter catalyzed non-stereospecific propylene polymerization without any syndiotactic tendency, but with 40 and 20 times greater ethylene and propylene activity respectively than the former catalytic system.