[(C5Me5)Y(N(i-Pr)2)2(THF)] | 919526-29-7

• 英文名称: [(C5Me5)Y(N(i-Pr)2)2(THF)]
• 英文别名: (C5Me5)Y(NiPr2)2(THF)
• CAS: 919526-29-7
• 化学式: C₂₆H₅₁N₂OY
• 分子量: 496.61
• InChiKey: WZGJFPXJORKBEO-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：

  [(C5Me5)Y(N(i-Pr)2)2(THF)] 、 三甲基铝 以 正己烷 为溶剂， 以74%的产率得到((CH3)5C5)Y((μ-CH3)2Al(CH3)2)2
  参考文献：
  名称：

  Tetramethylaluminate and Tetramethylgallate Coordination in Rare-Earth Metal Half-Sandwich and Metallocene Complexes

  摘要：

  The synthesis of half-sandwich tetramethylaluminate complexes Cp*Y(AlMe4)(2) (Cp* = C5Me5) was achieved by applying two synthesis protocols: (a) protonolysis of Y(AlMe4)(3) with excess HCp* at ambient temperature; (b) alkylamide elimination using Cp*Y(NiPr2)(2)(THF) and trimethylaluminum at ambient temperature. The tetramethylgallate derivative Cp*Y(GaMe4)(2) was obtained from the equimolar reaction of Y(GaMe4)(3) with HCp* or by addition of 2 equiv of trimethylgallium to [Cp*YMe2](3). The half-sandwich complexes Cp*Y(MMe4)(2) (M = Al, Ga) display similar structural chemistry featuring highly fluxional methyl groups in solution and one planar and one atypically bent Y(mu-Me)(2)M moiety in the solid state. Complexes [CP*(2)Ln(MMe4)] (Ln = Y, La; M = Al, Ga) were synthesized from Ln(MMe4)(3) with excess HCp* at elevated temperature. Such metallocene complexes show the known monomer-dimer equilibria in solution, with the entropically disfavored dimer prevailing at low temperature. Dimeric [Cp*La-2(AlMe4)](2) and [Cp*Y-2(GaMe4)](2) as well as monomeric CP*La-2(GaMe4) were analyzed by X-ray diffraction.

  DOI：

  10.1021/om9007168

文献信息

• Synthesis and derivatization of halflanthanidocene aryl(alk)oxide complexes
  作者：Andreas Fischbach、Eberhardt Herdtweck、Reiner Anwander

  DOI：10.1016/j.ica.2006.07.090

  日期：2006.12

  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.