(1-tBu-3,4-Me2C5H2)(C5H5)Ta(μ-CO)(μ-PMe2)W(CO)5(PMePh(o-C6H4OMe)) | 176778-38-4

• 英文名称: (1-tBu-3,4-Me2C5H2)(C5H5)Ta(μ-CO)(μ-PMe2)W(CO)5(PMePh(o-C6H4OMe))
• CAS: 176778-38-4
• 化学式: C₃₇H₄₃O₆P₂TaW
• 分子量: 1010.49
• InChiKey: PZOXZLHWMIIFMS-WWILZZJQSA-N

反应信息

• 作为产物：
  描述：

  (R)-(2-甲氧基苯基)甲基苯基膦 、 (1-tBu-3,4-Me2C5H2)(C5H5)Ta(μ-CO)(μ-PMe2)W(CO)5 以 四氢呋喃 为溶剂， 以92%的产率得到(1-tBu-3,4-Me2C5H2)(C5H5)Ta(μ-CO)(μ-PMe2)W(CO)5(PMePh(o-C6H4OMe))
  参考文献：
  名称：

  Optically Active Bimetallic Complexes with a Tantalum Atom as a Chiral Center. Synthesis, Characterization, and X-ray Structures of Two Diastereoisomers:  Cp‘CpTa*(CO)(μ-PMe₂)W(CO)₄L* (Cp‘ = 1-^tBu-3,4-Me₂-C₅H₂; L* = (R)-(+)-Phenyl(o-anisyl)methylphosphine (PAMP))

  摘要：

  Reaction of the racemic metallophosphine Cp'CpTa(CO)(PMe(2)) (1; Cp' = 1-(t)Bu-3,4-Me(2)-C5H2) with the tungsten fragment [W(CO)(5)] affords the corresponding mu-bimetallic phosphido complex 2, which in a photochemical transformation gives the dibridged derivative Cp'CpTa-(mu u-CO)(mu-PMe(2))W(CO)(4) (3). Addition of an optically active phosphine (PAMP) to 3 leads to a pair of optically active diastereoisomers (4a and 4b) which can be separated by fractionnal crystallization. Both diastereoisomers 4a and 4b crystallize in the orthorhombic noncentrosymmetric space group P2(1)2(1)2(1). X-ray structure determinations of 4a and 4b allowed the assignment of absolute configurations of the tantalum chiral centers (S for 4a and R for 4b). The absolute configuration of the phosphorus atom of the PAMP ligand is the same (S) in both structures.

  DOI：

  10.1021/om9600497