Ta(CO)2(1,2-bis(dibutylphosphino)ethane)2Cl | 162719-72-4

• 英文名称: Ta(CO)2(1,2-bis(dibutylphosphino)ethane)2Cl
• CAS: 162719-72-4
• 化学式: C₃₈H₈₀ClO₂P₄Ta
• 分子量: 909.348
• InChiKey: RYHKEEVWPYLJDJ-UHFFFAOYSA-M

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：

  三甲基氯硅烷 、 Ta(CO)2(1,2-bis(dibutylphosphino)ethane)2Cl 在 40percent Na/Hg 作用下， 以 四氢呋喃 为溶剂， 以55%的产率得到Ta(Me₃SiOCCOCSiMe₃)(1,2-bis(dibutylphosphino)ethane)2Cl
  参考文献：
  名称：

  5二羰基到二甲氧乙炔配合物的还原偶联：环形成和增加的立体需求的影响。

  摘要：

  Convenient syntheses of dicarbonyl complexes of the type [M(CO)(2)(depe)(2)Cl] (depe = 1,2-bis(diethylphosphino)ethane, M = Ta (1), Nb (3)) and [M(CO)(2)(dbpe)(2)Cl] (dbpe = 1,2-bis(dibutylphosphino)ethane, M = Ta (2), Nb (4)) having increased steric demands at the high coordinate metal centers are described. Reductive coupling of the CO ligands of 1-4 occurs to provide products of the type [M(R'3SiOC double bond COSiR'(3))(R(2)PCH(2)CH(2)PR(2))(2)]X. Single crystal X-ray structural studies were carried out for two reductively coupled products prepared with 1,2-bis(chlorodimethylsilyl)ethane as the electrophile, [V(Me(2)SiOC double bond COSiMe(2))(dmpe)(2)Cl] (monoclinic, space group C2/c, a = 9.349(2) Angstrom, b = 20.548(3) Angstrom, c = 16.146(4) Angstrom, beta = 104.79(1)degrees, and V = 2999(1) Angstrom(3)) and [Ta(Me(2)SiOC double bond COSiMe(2))(depe)(2)Cl] (monoclinic, space group Cc, a = 11.512(1) Angstrom, b = 18.311(3) Angstrom, c 18.493(3) Angstrom, beta = 97.322(7)degrees, and V = 3875(1) Angstrom(3)). In these complexes, the acetylene is contained within a newly formed eight-membered ring, and the ligands are arranged in a pentagonal bipyramid geometry comprising two axial phosphorus atoms and five equatorial ligands, the coupled carbons, a trans chloride, and the remaining two phosphorus atoms.

  DOI：

  10.1021/om00003a044
• 作为产物：
  描述：

  一氧化碳 、 1,2-bis(di-n-butylphosphino)-ethane 、 五氯化钽 在 sodium amalgam 、 HgCl₂ 、 Mg 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 以48%的产率得到Ta(CO)2(1,2-bis(dibutylphosphino)ethane)2Cl
  参考文献：
  名称：

  5二羰基到二甲氧乙炔配合物的还原偶联：环形成和增加的立体需求的影响。

  摘要：

  Convenient syntheses of dicarbonyl complexes of the type [M(CO)(2)(depe)(2)Cl] (depe = 1,2-bis(diethylphosphino)ethane, M = Ta (1), Nb (3)) and [M(CO)(2)(dbpe)(2)Cl] (dbpe = 1,2-bis(dibutylphosphino)ethane, M = Ta (2), Nb (4)) having increased steric demands at the high coordinate metal centers are described. Reductive coupling of the CO ligands of 1-4 occurs to provide products of the type [M(R'3SiOC double bond COSiR'(3))(R(2)PCH(2)CH(2)PR(2))(2)]X. Single crystal X-ray structural studies were carried out for two reductively coupled products prepared with 1,2-bis(chlorodimethylsilyl)ethane as the electrophile, [V(Me(2)SiOC double bond COSiMe(2))(dmpe)(2)Cl] (monoclinic, space group C2/c, a = 9.349(2) Angstrom, b = 20.548(3) Angstrom, c = 16.146(4) Angstrom, beta = 104.79(1)degrees, and V = 2999(1) Angstrom(3)) and [Ta(Me(2)SiOC double bond COSiMe(2))(depe)(2)Cl] (monoclinic, space group Cc, a = 11.512(1) Angstrom, b = 18.311(3) Angstrom, c 18.493(3) Angstrom, beta = 97.322(7)degrees, and V = 3875(1) Angstrom(3)). In these complexes, the acetylene is contained within a newly formed eight-membered ring, and the ligands are arranged in a pentagonal bipyramid geometry comprising two axial phosphorus atoms and five equatorial ligands, the coupled carbons, a trans chloride, and the remaining two phosphorus atoms.

  DOI：

  10.1021/om00003a044