[Cp2Nb(NtBu)(PPh2)] | 1176202-83-7

• 英文名称: [Cp2Nb(NtBu)(PPh2)]
• CAS: 1176202-83-7
• 化学式: C₂₆H₂₉NNbP
• 分子量: 479.403
• InChiKey: UREFZCICGXEJSK-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：
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• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  [Cp2Nb(NtBu)(PPh2)] 、 chlorobis(ethylene)rhodium(I) dimer 在 LiBH(CH(CH₃)C₂H₅)3 or C₆H₅SiH(CH₃)2 作用下， 以 四氢呋喃 为溶剂， 生成 {Nb(η-C5H5)2(NBu-t)Cl}
  参考文献：
  名称：

  Niobium/Rhodium Bimetallic Complexes: Synthesis, Structure, and Catalytic Hydrosilylation of Acetophenone and Benzaldehyde

  摘要：

  Reactions of new imido phosphido complex, Cp2Nb(=NBu')(PPh2) (1), with olefin complexes of rhodium afford two types of compounds. With [(mu-Cl)Rh(C2H4)(2)](2), an imido/phosphido-bridged complex, Cp(Cl)Nb(mu-NBu')(mu-PPh2)RhCp (2), characterized by NMR and X-ray diffraction, was prepared. Formation of 2 represents a rare example of a Cp/Cl exchange reaction in organometallic chemistry. When 1 reacts with [mu-Cl)Rh(COD)](2), the target phosphido-bridged bimetallic complex Cp2Nb(=NBu')(mu-PPh2)Rh(Cl)(COD) (4) is formed. The structure of this product was established by NMR and an X-ray diffraction study. Both 2 and 4 are catalyst procursors for hydrosilylation of benzaldehyde and acceptophenone. The activity of the neutral complex 4 exceeds that of the cation [Cp2Nb(NBu')(PPh2)Rh(COD)]+ derived from 4 by chloride anion abstraction.

  DOI：

  10.1021/om900363r
• 作为产物：
  描述：

  {Nb(η-C5H5)2(NBu-t)Cl} 、 LiPPh2*diethyl ether 以 乙醚 为溶剂， 以77%的产率得到[Cp2Nb(NtBu)(PPh2)]
  参考文献：
  名称：

  Niobium/Rhodium Bimetallic Complexes: Synthesis, Structure, and Catalytic Hydrosilylation of Acetophenone and Benzaldehyde

  摘要：

  Reactions of new imido phosphido complex, Cp2Nb(=NBu')(PPh2) (1), with olefin complexes of rhodium afford two types of compounds. With [(mu-Cl)Rh(C2H4)(2)](2), an imido/phosphido-bridged complex, Cp(Cl)Nb(mu-NBu')(mu-PPh2)RhCp (2), characterized by NMR and X-ray diffraction, was prepared. Formation of 2 represents a rare example of a Cp/Cl exchange reaction in organometallic chemistry. When 1 reacts with [mu-Cl)Rh(COD)](2), the target phosphido-bridged bimetallic complex Cp2Nb(=NBu')(mu-PPh2)Rh(Cl)(COD) (4) is formed. The structure of this product was established by NMR and an X-ray diffraction study. Both 2 and 4 are catalyst procursors for hydrosilylation of benzaldehyde and acceptophenone. The activity of the neutral complex 4 exceeds that of the cation [Cp2Nb(NBu')(PPh2)Rh(COD)]+ derived from 4 by chloride anion abstraction.

  DOI：

  10.1021/om900363r