[(η5-C5H4SiMe3)NbMe2(OSi(iPr)3)][MeB(C6F5)3] | 1254123-31-3

• 英文名称: [(η5-C5H4SiMe3)NbMe2(OSi(iPr)3)][MeB(C6F5)3]
• CAS: 1254123-31-3
• 化学式: C₁₉H₃BF₁₅*C₁₉H₄₀NbOSi₂
• 分子量: 960.623
• InChiKey: CUNRQLFBDUNCBX-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：

  (η5-C5H4SiMe3)NbMe3(OSi(iPr)3) 、 三(五氟苯基)硼烷 以 甲苯 为溶剂， 以81%的产率得到[(η5-C5H4SiMe3)NbMe2(OSi(iPr)3)][MeB(C6F5)3]
  参考文献：
  名称：

  Synthesis of neutral and cationic monocyclopentadienyl alkyl niobium and tantalum complexes

  摘要：

  Compound [NbCp'Me-4] (Cp' - eta(5)-C5H4SiMe3, 1) reacted with several ROH compounds (R - tBu, SiiPr(3), 2,6-Me2C6H3) to give the derivatives [NbCp'Me-3(OR)] (R = tBu 2a, SiiPr(3) 2b, 2,6-Me2C6H3 2c). The diaryloxo tantalum compound [TaCp*Me-2(OR)(2)] (Cp* = eta(5)-C5Me5, R = 2,6-Me2C6H3 3) was obtained by reaction of [TaCp*Cl2Me2] with 2 equiv of LiOR (R = 2,6-Me2C6H3). Abstraction of one methyl group from these neutral compounds 1-3 with the Lewis acids E(C6F5)(3) (E = B, Al) gave the ionic derivatives [NbCp'Me2X][MeE(C6F5)(3)] (X = Me 4-E X = OR; R = SiiPr(3) 5b-E, 2,6-Me2C6H3 5c-E E = B, Al) and [TaCp*Me(OR)(2)][MeE(C6F5)(3)] (R = 2,6-Me2C6H3 6-E; E = B, Al). Polymerization of MMA with the aryloxoniobium compound 2c and Al(C6F5) 3 gave syndiotactic PMMA in a low yield, whereas the tetramethylniobium compound 1 and the diaryloxotantalum derivative 3 were inactive. (C) 2010 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2010.06.030