1,1'-bis(dimethylphenylsilyl)zirconocene dichloride | 278188-54-8

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 1,1'-bis(dimethylphenylsilyl)zirconocene dichloride
• 英文别名: cyclopenta-2,4-dien-1-yl-dimethyl-phenylsilane;dichlorozirconium(2+)
• CAS: 278188-54-8
• 化学式: C₂₆H₃₀Cl₂Si₂Zr
• 分子量: 560.825
• InChiKey: FWRGCUKDBMPLFC-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
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• 可旋转键数：
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• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  1,1'-bis(dimethylphenylsilyl)zirconocene dichloride 、 三氯化硼 以 二氯甲烷 为溶剂， 以72%的产率得到1,1'-bis(chlorodimethylsilyl)zirconocene dichloride
  参考文献：
  名称：

  Influence of the Departing Group on the Electrophilic Cleavage of Silicon−Carbon Bonds Adjacent to Zirconocene Dichloride. Preparation of Electrophile-Functionalized Zirconocene Dibromides

  摘要：

  (EtMe2SiC5H4)CpZrCl2 (5) reacts with BBr3 in 1,2-dichloroethane (reflux, 24 h) to afford a 4:1 mixture of (EtMeBrSiC5H4)CpZrBr2 (10) and (BrMe2SiC5H4)CpZrBr2 (11) in a nearly quantitative conversion. Similarly, ((BuMe2SiC5H4)-Bu-t)CpZrCl2 (6) reacts with BBr3 to afford a 15:1 mixture of ((BuMeBrSiC5H4)-Bu-t)CpZrBr2 (13) and 11. The product 11 is obtained independently by treating (Me3SiC5H4)CpZrCl2 (12) with BBr3. In contrast, Si-Ph bonds are cleaved with complete selectivity in the presence of Si-Me groups. (PhMe2SiC5H4)(2)-ZrCl2 (8) reacts with excess BCl3 in dichloromethane (reflux, 15 h) to afford (ClMe2SiC5H4)(2)-ZrCl2 (14) in 72% yield. (Ph2MeSiC5H4)(2)ZrCl2 (9) reacts with excess BBr3 in 1,2-dichloroethane (reflux, 15 h) to afford (Br2MeSiC5H4)(2)ZrBr2 (15) in 79% yield. Complexes 9 and 15 were analyzed by single-crystal X-ray diffraction. Crystalline 9 adopts a pseudo-C-2 conformation in which the face of the Ph group of one ligand shows a weak interaction with a C-H bond of the other ligand. Crystalline 15 also adopts a pseudo-C-2 conformation, in which the SiBr2 groups are directed away from the ZrBr2 group.

  DOI：

  10.1021/om0005452
• 作为产物：
  描述：

  zirconium tetrachloride bis(tetrahydrofuran) complex 、 lithium;cyclopenta-2,4-dien-1-yl-dimethyl-phenylsilane 以 四氢呋喃 为溶剂， 以71%的产率得到1,1'-bis(dimethylphenylsilyl)zirconocene dichloride
  参考文献：
  名称：

  Influence of the Departing Group on the Electrophilic Cleavage of Silicon−Carbon Bonds Adjacent to Zirconocene Dichloride. Preparation of Electrophile-Functionalized Zirconocene Dibromides

  摘要：

  (EtMe2SiC5H4)CpZrCl2 (5) reacts with BBr3 in 1,2-dichloroethane (reflux, 24 h) to afford a 4:1 mixture of (EtMeBrSiC5H4)CpZrBr2 (10) and (BrMe2SiC5H4)CpZrBr2 (11) in a nearly quantitative conversion. Similarly, ((BuMe2SiC5H4)-Bu-t)CpZrCl2 (6) reacts with BBr3 to afford a 15:1 mixture of ((BuMeBrSiC5H4)-Bu-t)CpZrBr2 (13) and 11. The product 11 is obtained independently by treating (Me3SiC5H4)CpZrCl2 (12) with BBr3. In contrast, Si-Ph bonds are cleaved with complete selectivity in the presence of Si-Me groups. (PhMe2SiC5H4)(2)-ZrCl2 (8) reacts with excess BCl3 in dichloromethane (reflux, 15 h) to afford (ClMe2SiC5H4)(2)-ZrCl2 (14) in 72% yield. (Ph2MeSiC5H4)(2)ZrCl2 (9) reacts with excess BBr3 in 1,2-dichloroethane (reflux, 15 h) to afford (Br2MeSiC5H4)(2)ZrBr2 (15) in 79% yield. Complexes 9 and 15 were analyzed by single-crystal X-ray diffraction. Crystalline 9 adopts a pseudo-C-2 conformation in which the face of the Ph group of one ligand shows a weak interaction with a C-H bond of the other ligand. Crystalline 15 also adopts a pseudo-C-2 conformation, in which the SiBr2 groups are directed away from the ZrBr2 group.

  DOI：

  10.1021/om0005452

文献信息

• ω-Phenylalkyl-substituted zirconocene dichloride complexes as catalyst precursors for homogeneous ethylene polymerization
  作者：Erik H Licht、Helmut G Alt、M.Manzurul Karim

  DOI：10.1016/s0022-328x(00)00009-7

  日期：2000.4

  The reaction of ω-phenyl-1-bromoalkanes with cyclopentadienyl sodium, indenyl lithium or fluorenyl lithium forms ω-phenylalkyl-substituted ligand precursors in high yields. The corresponding anions react with zirconium tetrachloride to give ω-phenylalkyl-substituted zirconocene dichloride complexes. After activation with methylaluminoxane, these complexes are highly active catalysts for homogeneous

  ω-苯基-1-溴代烷烃与环戊二烯基钠，茚基锂或芴基锂的反应以高收率形成了ω-苯基烷基取代的配体前体。相应的阴离子与四氯化锆反应，得到ω-苯基烷基取代的二茂锆二氯化物络合物。用甲基铝氧烷活化后，这些络合物是用于均相乙烯聚合的高活性催化剂。ω-苯基取代基的性质在很大程度上决定了催化剂的聚合活性。比较了28种新配合物的聚合结果。
• Synthesis, characterization and catalytic properties of metallacyclic zirconocene complexes
  作者：Erik H Licht、Helmut G Alt、M.Manzurul Karim

  DOI：10.1016/s0022-328x(00)00004-8

  日期：2000.4

  metallacyclic zirconocene complexes has been synthesized by the reaction of ω-phenyl-substituted zirconocene dichloride complexes with two equivalents of n-butyllithium via CH bond-activation reactions on the phenyl ring. After activation with methyl aluminoxane, these metallacycles are up to five times more active ethylene polymerization catalysts than the original metallocene dichloride complexes similarly

  通过ω-苯基取代的二茂锆二氯化物络合物与二当量的正丁基锂通过苯环上的CH键活化反应反应，已经合成了22种金属环茂锆新络合物。用甲基铝氧烷活化后，这些金属环丙烷的活性乙烯聚合催化剂的活性是同样被活化的原始金属茂二氯化物络合物的五倍。