lithium (trimethylsilyl)methanolate | 79158-41-1

• 分子结构分类: 有机化合物 - 有机盐 - 有机金属盐
• 英文名称: lithium (trimethylsilyl)methanolate
• CAS: 79158-41-1
• 化学式: C₄H₁₁LiOSi
• 分子量: 110.157
• InChiKey: TUUFLQHKXKEKRS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.77
• 重原子数：
  7.0
• 可旋转键数：
  1.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  23.06
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  lithium (trimethylsilyl)methanolate 、 三正丙基氯化锡 以 四氢呋喃 为溶剂， 生成 Trimethylsilylmethoxytri-n-propylstannan
  参考文献：
  名称：

  Schott, G.; Kelling, H.; Uhle, K., Zeitschrift fur Anorganische und Allgemeine Chemie

  摘要：

  DOI：

文献信息

• Formation and rearrangement of (siloxymethyl)zirconocene chloride complexes
  作者：Gerhard Erker、Maximilian Bendix、Ralph Petrenz

  DOI：10.1021/om00014a018

  日期：1994.2

  The zirconocene eta2-formaldehyde dimer 6 reacts with trialkylchlorosilanes R3SiCl (R = ethyl, methyl, isopropyl) to yield the (eta2-(trialkylsiloxy)methyl)zirconocene chloride complexes Cp2-Zr(Cl)CH2OSiR, (7a-c). These complexes exhibit internal O-coordination; they belong to a metallaoxirane structural type. Thermolysis of 7b,c at 110-degrees-C leads to equilibration with the isomers 8b,c and 9b,c. Complexes 8 are the acyclic CP2Zr(Cl)CH2OSiR3 isomers of 7, whereas dyotropic rearrangement has resulted in the formation of the CP2Zr(Cl)OCH2SiR3 products 9. The kinetics of the thermally induced rearrangement of 7b (R = CH3) is described by a 8b half arrow right over half arrow left 7b --> 9b kinetic scheme. At 110-degrees-C the K(8b half arrow right over half arrow left 7b) equilibrium constant is 0.35. The Gibbs activation energy of the 7b --> 8b isomerization at 110-degrees-C is DELTAG(double dagger)isom(383 K) = 30.9 +/- 0.5 kcal mol-1. The activation barrier of the 7b --> 9b transformation is in the expected range of a concerted dyotropic rearrangement process at DELTAG(double dagger)dyo(383 K) = 31.5 +/- 0.5 kcal mol-1. Treatment of 6 with triphenylchlorosilane has resulted in the direct formation of the acyclic addition product CP2Zr(Cl)CH2OSiPh3 (8d). Our study underlines the important participation of metallaoxirane type structures in dyotropic rearrangement systems.
• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Sn: Org.Comp.12, 1.4.1.1.1.3.2.1, page 2 - 6
  作者：

  DOI：——

  日期：——
• Preparation of volatile molecular lithium-niobium alkoxides. Crystal structures of [Nb(μ-OCH2SiMe3)(OCH2SiMe3)4]2 and [LiNb(μ3-OCH2SiMe3)-(μ2-OCH2SiMe3)2(OCH2SiMe3]2
  作者：Subhash C. Goel、Jennifer A. Hollingsworth、Alicia M. Beatty、Kerry D. Robinson、William E. Buhro

  DOI：10.1016/s0277-5387(97)00311-2

  日期：1998.3

  New heterometallic alkoxides [LiNb(OCH2CMe3)(6)](2) (4), LiNb(OCH2CMe3)(6)(Me3CCH2OH)(2) (5), and [LiNb(OCH2SiMe3)(6)](2), (6) have been prepared from the corresponding homometallic alkoxides. All are moderately soluble in hydrocarbons and sublime in moderate to good recoveries. The structure of 6 determined crystallographically contains an Nb2Li2(mu-O)(4)(mu(3)-O)(2) central-core geometry. Compound 4 appears to be isostructural on the basis of H-1 NMR data. Bulk pyrolysis of 4 gives crystalline LiNbO3 under N-2 at 600 degrees C. However, LiNbO3 films are not obtained from 4 by spray MOCVD under conditions that give LiNbO3 films from [LiNb(OEt)(6)](infinity). Crystallographic structure determination for the precursor compound [Nb(mu-OCH2SiMe3) (OCH2SiMe3)(4)](2) (3) reveals an edge-shared bioctahedral geometry in which the mu-O atoms are distinctly pyramidal. This structure is maintained in solution; the pyramidal bridge configurations allow coexistence of syn and anti dimeric isomers. Precursor 3 also exhibits a dimer-monomer equilibrium for which Delta H = 63(3) kJ/mol and Delta S = 180(10) J/(K mol). (C) 1998 Elsevier Science Ltd. All rights reserved.