(η5-C5Me5)(tetrahydrofuran)Cr(CH2)2SiMe2 | 219146-18-6

• 分子结构分类: 有机化合物 - 苯类化合物
• 英文名称: (η5-C5Me5)(tetrahydrofuran)Cr(CH2)2SiMe2
• 英文别名: 2-((dimethyl)sila)-1,3-propanediyl-(η(5)-pentamethylcyclopentadienyl)tetrahydrofuranchromium(III)；chromium(3+);dimethanidyl(dimethyl)silane;oxolane;1,2,3,4,5-pentamethylcyclopenta-1,3-diene
• CAS: 219146-18-6
• 化学式: C₁₈H₃₃CrOSi
• 分子量: 345.541
• InChiKey: LZVFYBSWPJKILD-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

• 作为反应物：
  描述：

  (η5-C5Me5)(tetrahydrofuran)Cr(CH2)2SiMe2 以 正戊烷 为溶剂， 以53%的产率得到bis(μ-trimethylsilylmethylene)bis(η(5)-pentamethylcyclopentadienyl)dichromium(III)
  参考文献：
  名称：

  Structure and Reactivity of Trimethylsilylmethyl Complexes of Chromium, Including the 13-Electron Alkyl Cp*Cr(CH₂SiMe₃)₂

  摘要：

  Alkylation of Cp*Cr(THF)Cl-2 with 1 or 2 equiv of LiCH2SiMe3 yielded the paramagnetic chromium alkyls [Cp*Cr(mu-Cl)(CH2SiMe3)](2) (1), Cp*Cr(CH2SiMe3)(2) (2), and Cp*Cr(L)(CH2SiMe3)(2) (3a, L = py; 3b, L = THF). Compound 2 isa coordinatively unsaturated, pseudo-five-coordinate Cr-III complex with a 13-electron configuration, and it catalyzes the polymerization of ethylene. The thermal decomposition of 2 in noncoordinating solvents proceeded via an intermediate, namely the bis(mu-alkylidene) complex [Cp*Cr(mu-CHSi(CH3)(3))](2) (4). Compound 4 suffered reductive elimination to yield the dinuclear Cr-II alkyl Cp*Cr-2(2)(mu-CH2Si(CH3)(2)CH2-mu-CHSi(CH3)(3)) (5). In contrast, the decomposition of 2 in THF, i.e., 3b, yielded the metallacycles Cp*Cr(L)(CH2)(2)Si(CH3)(3)) (6a, L = py; 6b, L = THF). Compounds 1, 2, 3b, 4, and 5 have been structurally characterized by X-ray diffraction. The reactions of 2 are rationalized in terms of competing alpha- and gamma-hydrogen elimination processes yielding terminal alkylidene and metallacyclobutane intermediates existing in equilibrium.

  DOI：

  10.1021/om980796z
• 作为产物：
  描述：

  四氢呋喃 、 [(η5-C5Me5)Cr(CH2SiMe3)2] 以 四氢呋喃 为溶剂， 以40%的产率得到(η5-C5Me5)(tetrahydrofuran)Cr(CH2)2SiMe2
  参考文献：
  名称：

  Structure and Reactivity of Trimethylsilylmethyl Complexes of Chromium, Including the 13-Electron Alkyl Cp*Cr(CH₂SiMe₃)₂

  摘要：

  Alkylation of Cp*Cr(THF)Cl-2 with 1 or 2 equiv of LiCH2SiMe3 yielded the paramagnetic chromium alkyls [Cp*Cr(mu-Cl)(CH2SiMe3)](2) (1), Cp*Cr(CH2SiMe3)(2) (2), and Cp*Cr(L)(CH2SiMe3)(2) (3a, L = py; 3b, L = THF). Compound 2 isa coordinatively unsaturated, pseudo-five-coordinate Cr-III complex with a 13-electron configuration, and it catalyzes the polymerization of ethylene. The thermal decomposition of 2 in noncoordinating solvents proceeded via an intermediate, namely the bis(mu-alkylidene) complex [Cp*Cr(mu-CHSi(CH3)(3))](2) (4). Compound 4 suffered reductive elimination to yield the dinuclear Cr-II alkyl Cp*Cr-2(2)(mu-CH2Si(CH3)(2)CH2-mu-CHSi(CH3)(3)) (5). In contrast, the decomposition of 2 in THF, i.e., 3b, yielded the metallacycles Cp*Cr(L)(CH2)(2)Si(CH3)(3)) (6a, L = py; 6b, L = THF). Compounds 1, 2, 3b, 4, and 5 have been structurally characterized by X-ray diffraction. The reactions of 2 are rationalized in terms of competing alpha- and gamma-hydrogen elimination processes yielding terminal alkylidene and metallacyclobutane intermediates existing in equilibrium.

  DOI：

  10.1021/om980796z

文献信息

• Voltammetric Study of an Unusual Dimer/Monomer Redox System Involving a Chromium(III) Complex of a Tridentate CNN Ligand
  作者：Somying Leelasubcharoen、Mark W. Lehmann、Klaus H. Theopold、Dennis H. Evans

  DOI：10.1149/1.1346612

  日期：——

  complex of chromium, the metallacycle, Cp * Cr(L)(CH 2 ) 2 Si(CH 3 ) 2 (L=THF), was treated with 2,2'-bipyridine. Instead of producing the desired trimethylsilylmethylidine complex, a new complex (η 5 -(pentamethylcyclopentadienyl)(2(2,2-dimethyl-2-silapropyl)-1,2-dihydro[2,2']bipyridine-1,3-diyl)chromium(III), 1) with a methylene bridge between silicon and the C 2 carbon of the bidentate 2,2'-bipyridine

  在尝试制备铬的亚烷基配合物时，金属环 Cp * Cr(L)(CH 2 ) 2 Si(CH 3 ) 2 (L=THF) 用 2,2'-联吡啶处理。代替产生所需的三甲基甲硅烷基亚甲基复合物，一种新的复合物 (η 5 -(pentamethylcyclopentadienyl)(2(2,2-dimethyl-2-silapropyl)-1,2-dihydro[2,2']bipyridine-1,3-diyl) )铬(III)，1)在硅和二齿2,2'-联吡啶配体的C 2 碳之间形成亚甲基桥。修饰的联吡啶配体包含一个碳和两个氮供体原子（CNN 配体）。当 1 用 [Cp 2 Fe] + [PF 6 ] - 处理时，发生氧化二聚反应，产生连接在每个 2,2'-联吡啶配体的 C 3 碳原子上的二聚体二聚体 (2)。该二聚体被分离为六氟磷酸盐。在目前的工作中，已经探索了 1 和 2 的电化学行为，并且已经表明，1