[Nd3(μ3-tert-butoxide)2(μ2-tert-butoxide)3(tert-butoxide)4(tetrahydrofuran)2] | 319457-49-3

• 英文名称: [Nd3(μ3-tert-butoxide)2(μ2-tert-butoxide)3(tert-butoxide)4(tetrahydrofuran)2]
• 英文别名: Nd3(μ3-OC(CH3)3)2(μ-OC(CH3)3)3(OC(CH3)3)4(tetrahydrofuran)2
• CAS: 319457-49-3
• 化学式: C₄₄H₉₇Nd₃O₁₁
• 分子量: 1234.97
• InChiKey: KYUHIBBINYSXNM-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：

  四氢呋喃 、 三氯化钕 、 sodium t-butanolate 以 四氢呋喃 为溶剂， 以80%的产率得到[Nd3(μ3-tert-butoxide)2(μ2-tert-butoxide)3(tert-butoxide)4(tetrahydrofuran)2]
  参考文献：
  名称：

  Rare earth alkoxides as inorganic precursors for olefin polymerization: an alternative to traditional lanthanocene chemistry

  摘要：

  叔丁醇钕的组合 [Nd3(μ3-OBut)2(μ-OBu t)3(OBut)4(THF)2] 1 与 1 当量的二烷基镁试剂一起提供了有效的 乙烯假活性聚合催化​​剂。

  DOI：

  10.1039/b006941h

文献信息

• Homogeneous and heterogeneous alkyl-alkoxo-lanthanide type catalysts for polymerization and block-copolymerization of ethylene and methyl methacrylate
  作者：Jérôme Gromada、Thomas Chenal、André Mortreux、Frédéric Leising、Jean-François Carpentier

  DOI：10.1016/s1381-1169(01)00507-6

  日期：2002.5

  The combination of the neodymium tert-butoxide Nd-3(mu(3)-OBut)2(mu(2)-OBut)(3)(OBut)(4)(THF)(2) (1), resulting from the metathetic exchange between NdCl3 and Bu-t ONa in THF, with 1 equiv. of a dialkylmagnesium reagent affords a moderately active cyclopentadienyl-free lanthanide catalyst for the pseudo-living polymerization of ethylene. Polymerizations performed under mild conditions (0degreesC, 1 atm) in the presence of PhSiH3 or H-2 as a transfer agent led to low molecular weight linear polyethylenes with activities in the range 5-20 kg PE (mol Nd)(-1) atm(-1) h(-1). In the absence of such a co-reagent, highly linear and crystalline polyethylenes of high molecular weight are produced with ca. halved activity. Under those reaction conditions, a polymer-like precipitate (2) forms during the polymerization course. Most interestingly, solid 2 proved to be an equivalent catalyst to the initial in situ system for the slurry polymerization of ethylene. Solid 2, which is assumed to be the Nd-polyethylenyl intermediate, shows also significant ethylene polymerization activity under solid-gas conditions and enables the efficient preparation of ethylene-methyl methacrylate diblock copolymers. (C) 2002 Elsevier Science B.V. All rights reserved.