[(η5-cyclopentadienyl)Cr(PhNCC2H3(CH3)C6H(tert-butyl)(CH3)O)Cl] | 1172617-54-7

• 英文名称: [(η5-cyclopentadienyl)Cr(PhNCC2H3(CH3)C6H(tert-butyl)(CH3)O)Cl]
• CAS: 1172617-54-7
• 化学式: C₂₆H₂₉ClCrNO
• 分子量: 458.971
• InChiKey: SFJKPJRYXLLEIL-ASADSZNFSA-L

反应信息

• 作为产物：
  描述：

  trichlorotris(tetrahydrofuran)chromium(III) 、 cyclopentadienyl(tetrahydrofuran)sodium 、 在 sodium hydride 作用下， 以 四氢呋喃 为溶剂， 以58%的产率得到[(η5-cyclopentadienyl)Cr(PhNCC2H3(CH3)C6H(tert-butyl)(CH3)O)Cl]
  参考文献：
  名称：

  Half-Sandwich Chromium(III) Catalysts Bearing Hydroxyindanimine Ligands for Ethylene Polymerization

  摘要：

  A series of novel half-sandwich chromium(III) complexes bearing hydroxyindanimine ligands, [Cp*Cr[ArN=CC2H3(CH3)C6HR1R2O]Cl (Ar = Ph, R-1 = H, R-2 = Me (2a), R-2 = Cl (2c); Ar = 2,6-(Pr2C6H3)-Pr-i, R-1 = H, R-2 = Me (2b), R-2 = Cl (2d); Ar = Ph, R-1 = Bu-t, R-2= Me (2e))], were synthesized by the reaction of Cp*CrCl2(THF) and the sodium salts of the hydroxylindanone-imine ligands in THF at -78 degrees C. Complex 2c has been confirmed by single-crystal X-ray analysis. The complex adopts a three-legged piano stool geometry with a pseudo-octahedral coordination environment. After activation with only a small amount of AlEt3, these catalytic precursors exhibit high activities (up to 1.68 x 10(5) g PE (mol Cr)(-1) h(-1)) for ethylene polymerization to afford high molecular weight PE ((5.45-9.23) x 10(5) g mol(-1)). The catalytic activities of the chromium complexes increase with decreasing steric hindrance on the nitrogen atom of the hydroxyl-indanone-imine ligand. The introduction of the bulky ortho-Bu-t group and the para-chlorine atom on the phenol hydroxyl improved the activity for the polymerization.

  DOI：

  10.1021/om900279p