(N,N'-dicyclohexyl-N''-bis(trimethylsilyl)guanidinato)YCl2(diethyl ether) | 906562-19-4

• 英文名称: (N,N'-dicyclohexyl-N''-bis(trimethylsilyl)guanidinato)YCl2(diethyl ether)
• CAS: 906562-19-4
• 化学式: C₂₃H₅₀Cl₂N₃OSi₂Y
• 分子量: 600.652
• InChiKey: RTKUUFUJXMEQQR-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 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：

  (N,N'-dicyclohexyl-N''-bis(trimethylsilyl)guanidinato)YCl2(diethyl ether) 、 trimethylsilylmethyllithium 以 正己烷 为溶剂， 以34%的产率得到(N,N'-dicyclohexyl-N''-bis(trimethylsilyl)guanidinato)Y(μ-CH2SiMe3)2Li
  参考文献：
  名称：

  Alkylyttrium Complexes Supported by N,N‘-Dicyclohexyl-N‘ ‘-bis(trimethylsilyl)guanidinate Ligands

  摘要：

  The reaction of anhydrous YCl3 with an equimolar amount of lithium N,N'-dicyclohexyl-N"-bis(trimethylsilyl) guanidinate, Li[(Me3Si)(2)NC(NCy)(2)], in THF afforded the monoguanidinate dichloro complex [{(Me3Si)(2)NC(NCy)(2)}Y{(mu-Cl)(2)Li(THF)(2)}(mu-Cl)](2) (1). X-ray diffraction study showed that complex 1 has a bimetallic tetranuclear dimeric core with six mu(2)-bridging chloro ligands. Treatment of complex 1 with 4 molar equiv of LiCH2SiMe3 in hexane at 0 degrees C yielded the monomeric salt-free dialkyl complex {(Me3Si)(2)NC(NCy)(2)}Y(CH2SiMe3)(2)(THF)(2) (2). The monoguanidinate tetramethyl ate-complex {(Me3Si) 2NC(NCy)(2)}Y[(mu-Me)(2)Li(TMEDA)](2) (3) was prepared by the reaction of complex 1 with 8 equiv of MeLi in the presence of excess TMEDA in toluene at 20 degrees C. The complexes 2 and 3 were structurally characterized. Alkylation of complex 1 with t-BuLi (1:4 molar ratio) in hexane resulted in the formation of the bis(guanidinate) alkyl yttrium complex {(Me3Si)(2)NC(NCy)(2)}(2)Y(t-Bu) (4) in 42% yield. The guanidinate ligand redistribution was also observed in the reaction of the mono(guanidinate) dichloro yttrium complex {(Me3Si)(2)NC(NCy)(2)}YCl2(Et2O) (5) with 2 molar equiv of LiCH2SiMe3 in hexane at 0 degrees C. This reaction afforded ate-complex {(Me3Si)(2)NC(NCy)(2)}(2)Y(mu-CH2SiMe3)(2)Li (6) in 34% yield. The X-ray diffraction study has revealed a low formal coordination number of the lithium atom in 6 and its agostic interaction with two methyl carbon atoms of SiMe3 groups.

  DOI：

  10.1021/om060280c
• 作为产物：
  描述：

  乙醚 、 lithium bis(trimethylsilyl)amide diethyl etherate 、 N,N'-di-cyclohexylformamidine 、 氯化钇 以 乙醚 为溶剂， 以71%的产率得到(N,N'-dicyclohexyl-N''-bis(trimethylsilyl)guanidinato)YCl2(diethyl ether)
  参考文献：
  名称：

  Alkylyttrium Complexes Supported by N,N‘-Dicyclohexyl-N‘ ‘-bis(trimethylsilyl)guanidinate Ligands

  摘要：

  The reaction of anhydrous YCl3 with an equimolar amount of lithium N,N'-dicyclohexyl-N"-bis(trimethylsilyl) guanidinate, Li[(Me3Si)(2)NC(NCy)(2)], in THF afforded the monoguanidinate dichloro complex [{(Me3Si)(2)NC(NCy)(2)}Y{(mu-Cl)(2)Li(THF)(2)}(mu-Cl)](2) (1). X-ray diffraction study showed that complex 1 has a bimetallic tetranuclear dimeric core with six mu(2)-bridging chloro ligands. Treatment of complex 1 with 4 molar equiv of LiCH2SiMe3 in hexane at 0 degrees C yielded the monomeric salt-free dialkyl complex {(Me3Si)(2)NC(NCy)(2)}Y(CH2SiMe3)(2)(THF)(2) (2). The monoguanidinate tetramethyl ate-complex {(Me3Si) 2NC(NCy)(2)}Y[(mu-Me)(2)Li(TMEDA)](2) (3) was prepared by the reaction of complex 1 with 8 equiv of MeLi in the presence of excess TMEDA in toluene at 20 degrees C. The complexes 2 and 3 were structurally characterized. Alkylation of complex 1 with t-BuLi (1:4 molar ratio) in hexane resulted in the formation of the bis(guanidinate) alkyl yttrium complex {(Me3Si)(2)NC(NCy)(2)}(2)Y(t-Bu) (4) in 42% yield. The guanidinate ligand redistribution was also observed in the reaction of the mono(guanidinate) dichloro yttrium complex {(Me3Si)(2)NC(NCy)(2)}YCl2(Et2O) (5) with 2 molar equiv of LiCH2SiMe3 in hexane at 0 degrees C. This reaction afforded ate-complex {(Me3Si)(2)NC(NCy)(2)}(2)Y(mu-CH2SiMe3)(2)Li (6) in 34% yield. The X-ray diffraction study has revealed a low formal coordination number of the lithium atom in 6 and its agostic interaction with two methyl carbon atoms of SiMe3 groups.

  DOI：

  10.1021/om060280c