Cp*2Yb-(OEt2) | 74282-47-6

• 英文名称: Cp*2Yb-(OEt2)
• 英文别名: bis(pentamethylcyclopentadienyl)ytterbium-diethyl ester；Cp*₂Yb-(OEt₂)；Cp*₂Yb(OEt₂)
• CAS: 74282-47-6
• 化学式: C₂₄H₄₀O₂Yb
• 分子量: 533.62
• InChiKey: WEWBIOZJGBKBKL-UHFFFAOYSA-N

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：

  Cp*2Yb-(OEt2) 、 4,4',5,5'-tetramethyl-2,2′-biphosphinine 以 甲苯 为溶剂， 反应 0.25h， 以81%的产率得到Cp*₂Yb(tmbp)
  参考文献：
  名称：

  Electron transfer in tetramethylbiphosphinine complexes of Cp*₂Yb and Cp*₂Sm

  摘要：

  如何确保电子真正转移到tmbp配体？

  DOI：

  10.1039/c6nj00527f

文献信息

• Structure and bonding patterns in heterometallic organometallics with linear Ln–Pd–Ln motifs
  作者：Valeriu Cemortan、Thomas Simler、Jules Moutet、Arnaud Jaoul、Carine Clavaguéra、Grégory Nocton

  DOI：10.1039/d2sc06933d

  日期：——

  Complexes with short intermetallic distances between transition metal fragments and lanthanide (Ln) fragments are fascinating objects of study, owing to the ambiguity of the nature of the interaction. The addition of the divalent lanthanide fragments Cp*2Ln(OEt2) (Ln = Sm or Yb) to a Pd(II) complex bearing the deprotonated form of the redox-active, non-symmetrical ligand, 2-pyrimidin-2-yl-1H-benzimidazole

  由于相互作用性质的模糊性，过渡金属碎片和镧系元素 (Ln) 碎片之间具有短金属间距离的配合物是引人入胜的研究对象。将二价镧系元素片段 Cp* 2 Ln(OEt 2 )（Ln = Sm 或 Yb）添加到带有去质子化形式的氧化还原活性非对称配体 2-pyrimidin-2- 的Pd( II ) 络合物中yl-1 H -benzimidazole (Hbimpm)，导致两个等结构配合物，具有通式 (Cp* 2 Ln) 2 [μ-Pd(pyridyl) 2 ] (Ln = Sm ( 4 ) 和 Yb ( 5)). 这些加合物具有有趣的特征，例如独特的线性 Ln-Pd-Ln 排列和短的 Ln-Pd 距离，这偏离了预期的镧系收缩。对这些加合物形成的混合计算和光谱研究收集了关于它们形成的重要线索。同时，对这些复合物的彻底表征确定了所有相关 Ln 中心的 +3 氧化态。详细的理论计算表明，与镧系元素收缩的明显偏差不是由于
• η⁵–η¹ Switch in Divalent Phosphaytterbocene Complexes with Neutral Iminophosphoranyl Pincer Ligands: Solid-State Structures and Solution NMR ¹<i>J</i>_Yb–P Coupling Constants
  作者：Thibault Cheisson、Audrey Auffrant、Grégory Nocton

  DOI：10.1021/acs.organomet.5b00814

  日期：2015.11.23

  This paper reports the synthesis of a series of complexes based on the bis(pentamethylcyclopentadienyl)ytterbium(II) (1; Cp*Yb-2) and bis(tetramethylphospholyl)ytterbium(II) (2; Tmp(2)Yb) fragments bearing an additional neutral bis(methyliminophosphoranyl)pyridine ligand (L) on which the steric demand is modulated at the phosphorus position (triethyl, L-Et; triphenyl, LPh; tricyclohexyl, L-Cy) to yield the original complexes Cp*2YbLEt (1-L-Et), Cp*2YbLPh (1-LPh), Tmp2YbL(Et) (2-L-Et), Tmp2YbLPh (2-LPh), and Tmp2YbL(Cy) (2-L-Cy), while no reaction occurs between 1 and L-Cy. The crystal structures of these sterically crowded complexes are reported as well as room-temperature NMR data for all the complexes. The solid-state coordination mode of LR differs depending on the nature of the fragments 1 and 2 and on the steric bulk of LR. The crystal structure of the divalent Tmp2Yb(py)2 (3) is also reported for structural and spectroscopic comparisons. Interestingly, in both 2-L-Et and 2-L-Cy, one of the two Tmp ligands coordinates in an eta(1) rather than in an eta(5) fashion, a relevant coordination mode for the study of sterically induced reductions. The behavior of those complexes in solution varies with the sterics and electronics of the ligands, as demonstrated by variable-temperature NMR experiments. In solution, the 1JYbP coupling is used to track the coordination mode of the Tmp ligand and a large difference in the 1JYbP coupling constant allows the distinction between an eta(5) coordination mode and a dynamic eta(5)-eta(1) switch.
• Boncella, James M.; Andersen, Richard A., Inorganic Chemistry, 1984, vol. 23, # 4, p. 432 - 437
  作者：Boncella, James M.、Andersen, Richard A.

  DOI：——

  日期：——