三(2,4,4-三甲基戊基)铝 | 16216-31-2

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机过渡后金属化合物
• 中文名称: 三(2,4,4-三甲基戊基)铝
• 中文别名: 三(2,4,4-三甲代戊基)铝
• 英文名称: Aluminium-tri-<2.4.4-trimethyl-pentyl>
• CAS: 16216-31-2
• 化学式: C₂₄H₅₁Al
• 分子量: 366.65
• InChiKey: XZIKSWMNFLIAQP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.7
• 重原子数：
  25
• 可旋转键数：
  12
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 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：

  三(2,4,4-三甲基戊基)铝 在 盐酸 、 氧气 作用下， 生成 三甲基戊醇
  参考文献：
  名称：

  Kuchin, A. V.; Tolstikov, G. A.; Yur'ev, V. P., Journal of general chemistry of the USSR, 1980, vol. 50, # 4, p. 737 - 741

  摘要：

  DOI：
• 作为产物：
  描述：

  异辛烯 以54%的产率得到
  参考文献：
  名称：

  KUCHIN A. V.; TOLSTIKOV G. A.; YUREV V. P.; PONOMARENKO V. I.; KURILENKO +, ZH. OBSHCH. XIMII, 1980, 50, HO 4, 911-916

  摘要：

  DOI：

文献信息

• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Sn: Org.Verb.2, 1.1.2.5.1, page 272 - 276
  作者：

  DOI：——

  日期：——
• Schneider, B.; Neumann, W. P., Liebigs Annalen der Chemie, 1967, vol. 707, p. 7 - 14
  作者：Schneider, B.、Neumann, W. P.

  DOI：——

  日期：——
• NMR investigations of the reactivity between zirconocenes and β-alkyl-substituted aluminoxanes
  作者：Incoronata Tritto、Debora Zucchi、Mara Destro、Maria Carmela Sacchi、Tiziano Dall'Occo、Maurizio Galimberti

  DOI：10.1016/s1381-1169(00)00237-5

  日期：2000.10

  H-1 and C-13 NMR studies of the reactions between two beta-alkyl-substituted aluminoxanes obtained from the in situ reaction between Al(i-Bu)(3), Al(i-Oct)(3) and H2O with two metallocenes Cp2ZrCl2 and Cp;ZrCl2 (Cp = cyclopentadienyl, and Cp * = pentamethyicyclopentadienyl) have been performed. The beta-branched aluminoxanes were obtained from the in situ reaction between Al(i-R)(3) and H2O at Al/H2O molar ratio of 2 (R = i-Bu (TIBAO), R = i-Oct (TIOAO)). A comparison of the Cp2ZrCl2 and Cp-2* ZrCl2 reactivity with MAO, as the reference point for aluminoxanes, as well as with their parent aluminum alkyls AlM3, (TMA), Al(i-Bu)(3) (TLBA), and Al(i-Oct)(3) (TIOA) has been made. Cp-2* ZrCl2, because of steric hindrance, is less reactive than Cp2ZrCl2 towards all aluminium compounds considered. The Cp-2*Zr-i-BuCl and Cp-2* Zr-i-OctCl produced appear to be more stable than Cp2Zr-i-BuCl and Cp2Zr-i-OctCl due to the Cp* steric hindrance, which inhibits beta-hydrogen eliminations. The lower reactivity of Cp-2*ZrCl2 along with the higher stability of the zirconium alkyls produced has allowed us to produce evidence of the greater capacity of TIOAO with respect to TIBAO for yielding alkylated ion pairs. These results explain the polymerization activities yielded by metallocenes when combined with the above aluminoxanes, that is, the Cp2ZrCl2 activity only with MAO, and the high polymerization activities of substituted metallocenes when beta-alkyl-substituted aluminoxanes are used as cocatalysts. (C) 2000 Elsevier Science B.V. All rights reserved.
• Kuchin, A. V.; Tolstikov, G. A.; Yur'ev, V. P., Journal of general chemistry of the USSR, 1980, vol. 50, p. 737 - 741
  作者：Kuchin, A. V.、Tolstikov, G. A.、Yur'ev, V. P.、Ponomarenko, V. I.、Kurilenko, G. N.、et al.

  DOI：——

  日期：——
• Ethene/propene copolymerisations with rac-EBTHIZrR2/alumoxane: σ-ligands effect
  作者：Eleonora Polo、Maurizio Galimberti、Nicoletta Mascellani、Ofelia Fusco、Gabi Müller、Silvana Sostero

  DOI：10.1016/s1381-1169(00)00215-6

  日期：2000.10

  We report here about the role played by the a-ligands of a metallocene in ethene/propene (E/P) copolymerisations promoted by rac-[ethylenebis(4,5,6,7-tetrahydro-1-indenyl)]zirconium dichloride i, and its corresponding dimethyl derivative rac-EBTHIZrMe2 2 and binaphtholate rac-EBTHIZr(BNP) 3 derivative, in the presence of several alumoxanes,Alumoxanes alternative to the traditional polymethylalumoxane (MAO) were synthesised and characterised. They are based on Al(2,4,4-trimethylpentyl)3 (TIOA) 4 and were prepared by reaction of 4 with water to give either tetraisooctylalumoxane (TIOAO) 5 or polyisooctylalumoxane (TAO) 6 depending on the stoichiometry of the reaction. H-1 NMR spectra of these products are characterised by the presence of broad bands and of resolved multiplets. Their relative amount in the region between 1.9 and 2.5 ppm was identified as the "fingerprint" of the polymerisation activity. A comparison of the results obtained in polymerisation with metallocenes having different sigma-ligands allowed us to shed more light on the role played by those species.In conclusion, the nature of the sigma-ligands of a metallocene affects its catalytic activity in polymerisation, as a function of the alumoxane employed and of the relative ratio with the metallocene, and this effect is enhanced in "critical conditions," i.e. with a weakly activating cocatalyst or at a low Al/Zr ratio. (C) 2000 Elsevier Science B.V. All rights reserved.