(C5Me5)Y(neopentanolato)(μ-neopentanolato)]2 | 919526-08-2

• 英文名称: (C5Me5)Y(neopentanolato)(μ-neopentanolato)]2
• CAS: 919526-08-2
• 化学式: C₄₀H₇₄O₄Y₂
• 分子量: 796.837
• InChiKey: YMESXNCULWOFJG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 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：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  (C5Me5)Y(neopentanolato)(μ-neopentanolato)]2 、 三甲基铝 以 正己烷 为溶剂， 以81%的产率得到(C5Me5)Y(OCH2CMe3)2(AlMe3)2
  参考文献：
  名称：

  Synthesis and derivatization of halflanthanidocene aryl(alk)oxide complexes

  摘要：

  The reaction of halflanthanidocene aryloxides Cp(R')Ln(OArtBu,R)(2) (Ln = Y, La, Lu; Cp-R' = C5Me5, C4Me4H; R = H, Me) and half-lanthanidocene alkoxides [(C5Me5)Ln(OCH2CMe3)(2)](2) (Ln = Y, Lu) with trimethylaluminum (TMA) was investigated. Monomeric Cp(R')Ln(OArtBu,R)(2), derived from the ortho-tBu-substituted OC(6)H(2)tBu(2)-2,6-R-4 (R = H, Me) ligands, form mono(tetramethylaluminate) complexes Cp(R')Ln(OArtBu,R)(AlMe4) for the smaller lanthanide metal centers yttrium and lutetium. Such an [aryloxide] -> [aluminate] ligand exchange was not observed at the larger lanthanum metal center. The mobility of the tetramethylaluminate ligands of complexes Cp(R')Ln(OArtBu,R)(AlMe4) (Ln = Y, Lu) was examined by variable-temperature (VT) H-1 NMR spectroscopy, revealing two signals for bridging and terminal methyl groups at lower temperatures. The treatment of complexes Cp(R')Ln(OArtBu,R)(AlMe4) with donor solvent d(8)-THF gave Cp(R')Ln(OArtBu,R)(Me)(d(8)-THF)(2) (Ln = Y, Lu) with terminal methyl groups, according to a donor-induced aluminate cleavage reaction. Dimeric [(C5Me5)Ln(OCH2CMe3)(2)](2) (Ln = Y, Lu) was synthesized from (C5Me5)Ln(NiPr2)(2)(THF) and reacted with two equivalents of TMA per Ln center to yield monomeric bis(TMA) adduct complexes (C5Me5)Ln(OCH2CMe3)(2)(AlMe3)(2) (Ln = Y, Lu). VT NMR spectroscopic studies confirmed a high mobility of the Ln(mu-OCH2CMe3)(mu-Me)AlMe2 moieties at an ambient temperature. Both bis(TMA) adduct complexes were characterized by X-ray structure analysis. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.ica.2006.07.090
• 作为产物：
  描述：

  新戊醇 、 [(C5Me5)Y(N(i-Pr)2)2(THF)] 以 正己烷 为溶剂， 以84%的产率得到(C5Me5)Y(neopentanolato)(μ-neopentanolato)]2
  参考文献：
  名称：

  Synthesis and derivatization of halflanthanidocene aryl(alk)oxide complexes

  摘要：

  The reaction of halflanthanidocene aryloxides Cp(R')Ln(OArtBu,R)(2) (Ln = Y, La, Lu; Cp-R' = C5Me5, C4Me4H; R = H, Me) and half-lanthanidocene alkoxides [(C5Me5)Ln(OCH2CMe3)(2)](2) (Ln = Y, Lu) with trimethylaluminum (TMA) was investigated. Monomeric Cp(R')Ln(OArtBu,R)(2), derived from the ortho-tBu-substituted OC(6)H(2)tBu(2)-2,6-R-4 (R = H, Me) ligands, form mono(tetramethylaluminate) complexes Cp(R')Ln(OArtBu,R)(AlMe4) for the smaller lanthanide metal centers yttrium and lutetium. Such an [aryloxide] -> [aluminate] ligand exchange was not observed at the larger lanthanum metal center. The mobility of the tetramethylaluminate ligands of complexes Cp(R')Ln(OArtBu,R)(AlMe4) (Ln = Y, Lu) was examined by variable-temperature (VT) H-1 NMR spectroscopy, revealing two signals for bridging and terminal methyl groups at lower temperatures. The treatment of complexes Cp(R')Ln(OArtBu,R)(AlMe4) with donor solvent d(8)-THF gave Cp(R')Ln(OArtBu,R)(Me)(d(8)-THF)(2) (Ln = Y, Lu) with terminal methyl groups, according to a donor-induced aluminate cleavage reaction. Dimeric [(C5Me5)Ln(OCH2CMe3)(2)](2) (Ln = Y, Lu) was synthesized from (C5Me5)Ln(NiPr2)(2)(THF) and reacted with two equivalents of TMA per Ln center to yield monomeric bis(TMA) adduct complexes (C5Me5)Ln(OCH2CMe3)(2)(AlMe3)(2) (Ln = Y, Lu). VT NMR spectroscopic studies confirmed a high mobility of the Ln(mu-OCH2CMe3)(mu-Me)AlMe2 moieties at an ambient temperature. Both bis(TMA) adduct complexes were characterized by X-ray structure analysis. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.ica.2006.07.090

文献信息

• A Rare-Earth-Metal Ensemble of the Tebbe Reagent: Scope of Coligands and Carbonyl Olefination
  作者：Verena M. Birkelbach、Felix Kracht、H. Martin Dietrich、Christoph Stuhl、Cäcilia Maichle-Mössmer、Reiner Anwander

  DOI：10.1021/acs.organomet.0c00447

  日期：2020.10.12

  tetramethylaluminato cleavage gave access to “methyl-free” mixed methylidene/halogenido complexes CpR3Ln3(μ-X)3(μ3-X)(μ3-CH2)(THF)3 for yttrium (X = Cl, Br) and lanthanum (X = Cl, Br, I) in good yields. Additionally, mixed methylidene/halogenido Y(III) complexes could be obtained via methyl/halogenido exchange employing (C5Me5)3Y3(μ-Me)3(μ3-Me)(μ3-CH2)(THF)2 and SiMe3X via tetramethylsilane elimination. All methylidene

  用温和的卤代转移试剂SiMe 3 X（Xp X ）处理半三明治复合物Cp R Ln（AlMe 4）2（Cp R = C 5 Me 5，C 5 Me 4 SiMe 3 ; Ln = Y，La，Lu）＝ Cl，Br，I）导致有效和选择性的卤代/四甲基铝交换。根据稀土金属的大小，二聚体[Cp R Ln（AlMe 4）（μ-X）] 2（Ln = Y，Lu）和十金属[Cp R 3 La 3（AlMe 4）2（μ- X）4] 2。供体（THF）诱导裂解tetramethylaluminato了获得“自由甲基”混合亚甲基/ halogenido络合物的Cp - [R 3 LN 3（μ-X）3（μ 3 -X）（μ 3 -CH 2）（THF）3为钇（X = Cl，Br，I）和镧（X = Cl，Br，I）收率良好。此外，混合的亚甲基/ halogenido Y（III）配合物可通过甲基/ halogenido交换使用（C来获得5我5）3