CH2(Al(CH(SiMe3)2)2)2 | 128462-09-9

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: CH2(Al(CH(SiMe3)2)2)2
• 英文别名: [[Bis[bis(trimethylsilyl)methyl]alumanylmethyl-[bis(trimethylsilyl)methyl]alumanyl]-trimethylsilylmethyl]-trimethylsilane
• CAS: 128462-09-9
• 化学式: C₂₉H₇₈Al₂Si₈
• 分子量: 705.585
• InChiKey: QRCRLIQODWOLIH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  12.02
• 重原子数：
  39
• 可旋转键数：
  14
• 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：

  CH2(Al(CH(SiMe3)2)2)2 以 正戊烷 为溶剂， 生成 (bis(trimethylsilyl)methyl)dineopentylaluminum
  参考文献：
  名称：

  μ-Methylen-bis[chlor-bis(trimethylsilyl)methylalan] {(Me3Si)2CH(Cl)AlCH2Al(Cl)CH(SiMe3)2} mit einer Heteroadamantanstruktur

  摘要：

  The title compound 1 is formed by melting the peralkylated R2Al-CH2-A1R2 (R = CH(SiMe3)2) with the tetrachloro derivative Cl2Al-CH2-AlCl2 at 125-degrees-C. Crystal structure analysis reveals an Al-Cl bridged dimer with a heteroadamantane structure. Reaction of 1 with neopentyl lithium or trimethyl-silylmethyl lithium yields only the dismutation products Al[CH(SiMe3)2]R2 (R = CH2CMe3 and CH2SiMe3). From the missing methylene bridge oligomeric or polymeric species are formed presumably; these could not be isolated as pure compounds.

  DOI：

  10.1016/0022-328x(91)80118-4
• 作为产物：
  描述：

  bis(trimethylsilyl)methyllithium 以 正戊烷 为溶剂， 生成 CH2(Al(CH(SiMe3)2)2)2
  参考文献：
  名称：

  μ-Methylen-bis[chlor-bis(trimethylsilyl)methylalan] {(Me3Si)2CH(Cl)AlCH2Al(Cl)CH(SiMe3)2} mit einer Heteroadamantanstruktur

  摘要：

  The title compound 1 is formed by melting the peralkylated R2Al-CH2-A1R2 (R = CH(SiMe3)2) with the tetrachloro derivative Cl2Al-CH2-AlCl2 at 125-degrees-C. Crystal structure analysis reveals an Al-Cl bridged dimer with a heteroadamantane structure. Reaction of 1 with neopentyl lithium or trimethyl-silylmethyl lithium yields only the dismutation products Al[CH(SiMe3)2]R2 (R = CH2CMe3 and CH2SiMe3). From the missing methylene bridge oligomeric or polymeric species are formed presumably; these could not be isolated as pure compounds.

  DOI：

  10.1016/0022-328x(91)80118-4

文献信息

• The Methylene-bridged Dialuminium Compound R₂Al-CH₂-AlR₂ [R=CH(SiMe₃)₂] as an Effective Chelating Lewis Acid – Adducts with Halides, Perchlorate and Isopropylamide
  作者：Werner Uhl、Christian Rösener、Christina Stefaniak、Tim Choy、Beate Jasper-Peter、Jutta Kösters、Marcus Layh、Alexander Hepp

  DOI：10.5560/znb.2012-0145

  日期：2012.10.1

  The new methylene-bridged dialuminium compound Aryl₂Al-CH₂-AlAryl₂ 1b was synthesised from Cl₂Al-CH₂-AlCl₂ and four equivalents of LiAryl [Aryl=C₆H₂(2,4,6-i-Pr)₃]. A 1 : 2 stoichiometric ratio of the starting compounds afforded the dimeric aluminium halide (Aryl₂AlCl)₂ (2) by dismutation. The coordination behaviour of the related, but more easily available dialuminium compound R₂Al-CH₂-AlR₂ [R=CH(SiMe₃)₂] 1a was explored. It yields the Lewis acid base adducts [M][R₂Al-CH₂-AlR₂(μ-X)] [3a, M=Li(TMEN)₂, X=Cl; 3b, M=Li(TMEN)₂, X=Br; 3c, M=K(18-crown-6), X=ClO₄; 3d, M=Li(TMEN)₂, X=NH(i-Pr)] with X residing in a bridging position between the two Al atoms as evident from NMR spectroscopy and X-ray crystallography (3b, 3c, 3d). Compound 3c is a unique example of a stable, in organic solvents soluble adduct that features a ClO₄ ^- anion coordinated by an alkylaluminium compound via two of its oxygen atoms.

  由 Cl2Al-CH2-AlCl2 和四当量的 LiAryl [Aryl=C6H2(2,4,6-i-Pr)3]合成了新的亚甲基桥联二铝化合物 Aryl2Al- -AlAryl2 1b。起始化合物的化学计量比为 1:2，通过歧化得到二聚卤化铝 (Aryl2AlCl)2 (2)。研究还探讨了与之相关但更容易获得的二价铝化合物 R2Al- -AlR2 [R=CH(SiMe3)2] 1a 的配位行为。它产生了路易斯酸碱加合物 [M][R2Al- -AlR2(μ-X)] [3a，M=Li(TMEN)2，X=Cl；3b，M=Li(TMEN)2，X=Br；3c，M=K(18-冠-6)，X=ClO4；3d，M=Li(TMEN)2，X=NH(i-Pr)]，从核磁共振光谱和 X 射线晶体学（3b、3c、3d）可以看出，X 位于两个铝原子之间的桥接位置。化合物 3c 是在有机溶剂中稳定可溶的加合物的一个独特例子，其特点是 - 阴离子通过其两个氧原子与烷基铝化合物配位。
• Synthesis and molecular structure of a bis[di(alkyl)alanyl]methane; R2ALCH2AIR2 [R = CH(SiMe3)2]
  作者：Marcus Layh、Werner Uhl

  DOI：10.1016/s0277-5387(00)80580-x

  日期：1990.1

  Abstract Reaction of Cl2AlCH2AlCl2 with lithium-bis(trimethylsilyl)methyl in n-pentane yields [(Me3Si)2CH]2AlCH2Al[CH(SiMe3)2]2 (1), the first stable organometallic derivative of the starting tetrahalide. The crystal structure of 1 shows monomeric molecules with two trigonal planar coordinated metal atoms. The coordination sphere of the central carbon atom deviates significantly from tetrahedral

  在正戊烷中，Cl2AlCH2AlCl2与双（三甲基甲硅烷基）甲基锂反应生成[（Me3Si）2CH]2Al Al[CH（SiMe3）2] 2（1），这是一种稳定的有机锡金属衍生物起始四卤化物。1的晶体结构显示具有两个三角形平面配位金属原子的单体分子。中心碳原子的配位球明显偏离四面体几何形状，AlCAl角为129.6°。R =均三甲苯基，叔丁基，三（三甲基甲硅烷基）甲基和三甲基甲硅烷基的合成亚甲基桥连二烷的进一步实验均未成功。
• Treatment of a Methylene-Bridged Dialuminium Compound with Lithium Alkanides and Alkynides - Single vs. Twofold Terminal Coordination
  作者：Werner Uhl、Christian Rösener、Marcus Layh、Alexander Hepp

  DOI：10.1002/zaac.201200085

  日期：2012.9

  have investigated the coordination of alkanide and alkynide anions to the coordinatively unsaturated aluminium atoms of the methylene-bridged dialuminium compound R2Al-CH2-AlR2 [1, R = CH(SiMe3)2]. Treatment of 1 with the corresponding lithium derivatives in the presence of a small excess of TMEN (TMEN = tetramethylethylenediamine) yielded mono-adducts [M]+[R2Al-CH2-AlR2R']– [2a, M = Li(TMEN)2, R'

  我们研究了烷化物和炔化物阴离子与亚甲基桥连二铝化合物 R2Al-CH2-AlR2 [1, R = CH(SiMe3)2] 的配位不饱和铝原子的配位。在少量过量的 TMEN（TMEN = 四甲基乙二胺）存在下用相应的锂衍生物处理 1 产生单加合物 [M]+[R2Al- -AlR2R']– [2a, M = Li(TMEN)2， R' = 我；2b，M = Li(TMEN)2，R' = n-Bu；3a，M = Li(TMEN)2，R' = C≡C-SiMe3；3b，M = Li(TMEN)2，R' = C≡Ct-Bu；3d，M = Li(DME)3，R' = C≡C-Ph；3e, M = Li(TMEN)2, R' = C≡C-PPh2)] 和双加合物 [Li(TMEN)2]+[Li (AlR2R')2]– [4a, R' = C≡C - -NEt2；4b，R' = C≡Ct-Bu
• A Methylene-Bridged Dialuminium Compound as a Chelating Lewis Acid: Complexation of Nitrite and Nitrate Anions by R2Al–CH2–AlR2[R = CH(SiMe3)2]⋆
  作者：Werner Uhl、Frank Hannemann、Wolfgang Saak、Rudolf Wartchow

  DOI：10.1002/(sici)1099-0682(199807)1998:7<921::aid-ejic921>3.0.co;2-5

  日期：1998.7
• Uhl, Werner; Koch, Matthias; Vester, Annegret, Zeitschrift fur Anorganische und Allgemeine Chemie
  作者：Uhl, Werner、Koch, Matthias、Vester, Annegret

  DOI：——

  日期：——