dimethyl-bis[phenyl(pyridin-2-yl)methyl]silane;oxolane;ytterbium(2+) | 223907-99-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: dimethyl-bis[phenyl(pyridin-2-yl)methyl]silane;oxolane;ytterbium(2+)
• CAS: 223907-99-1
• 化学式: C₃₄H₄₀N₂O₂SiYb
• 分子量: 709.829
• InChiKey: CIUKWKBQDYRPQV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• sp3杂化的碳原子比例：
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反应信息

• 作为产物：
  描述：

  四氢呋喃 、 dipotassium salt of bis(2-pyridylphenylmethyl)dimethylsilane 、 ytterbium(II) bromide 以 四氢呋喃 为溶剂， 生成 dimethyl-bis[phenyl(pyridin-2-yl)methyl]silane;oxolane;ytterbium(2+)
  参考文献：
  名称：

  Catalytic activity of allyl-, azaallyl- and diaza-pentadienyllanthanide complexes for polymerization of methyl methacrylate

  摘要：

  A variety of allylic, aza-allylic and 1,5-diazapentadienyllanthanide compounds were synthesized and their polymerization catalysis toward methyl methacrylate were examined. Divalent Sm[1,3-bis(trimethylsilyl)propenyl](2)(THF)(2) 1 and Sm(1,3-diphenylpropenyl)(2)(THF)(2) 2 were synthesized by the reaction of potassium 1,3-bis(trimethylsilyl)propenide or potassium 1,3-diphenyl-propenide with SmI2. The aza-allyllanthanide compound was synthesized by the reaction of 2-pyridylbenzyllithium with SmCl3 followed by the reaction with LiCH(SiMe3)(2) to give (2-pyridylbenzyl)(2)SmCH(SiMe3)(2) 3. 1,5-Diazapentadienyllanthanide was prepared by the reaction of K[(C5H4N)(2)CPh] with YbBr2 to give Yb[(C5H4N)(2)CPh](2)(THF)(2) 4, which crystalizes monoclinic, space group C2/C (No. 15), with a = 35.19(1), b = 13.613(3), c = 26.552(7) Angstrom, beta = 133.77(1)degrees and Z = 8. Preparations of divalent samarium and ytterbium complexes with bis(2-pyridylphenylmethyl)dimethylsilane ligand (6 and 7) were carried out by the reaction of dipotassium salt of bis(2-pyridylphenylmethyl)dimethylsilane with SmI2 or YbBr2. By using the resulting compounds 1, 2, 3, 4, 6 and 7 as initiator, we have examined their catalytic activities for the polymerization of methyl methacrylate and found that compounds 6 and 7 are effective to give high molecular weight isotactic polymers. (C) 1999 Elsevier Science S.A. All rights reserved.

  DOI：

  10.1016/s0022-328x(98)00977-2