[NiBr2((6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-2-yl)-(6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-3-yl)methanone)] | 950904-85-5

• 英文名称: [NiBr2((6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-2-yl)-(6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-3-yl)methanone)]
• CAS: 950904-85-5
• 化学式: C₄₂H₄₅Br₂N₅Ni
• 分子量: 838.351
• InChiKey: YVYROOUKLGLFSQ-DFCRBURESA-L

反应信息

• 作为产物：
  描述：

  nickel(II) bromide dimethoxyethane 、 (6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-2-yl)-(6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-3-yl)methanone 以 乙醚 为溶剂， 以85%的产率得到[NiBr2((6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-2-yl)-(6-[1-(2,4,6-trimethylphenylimino)ethyl]pyridin-3-yl)methanone)]
  参考文献：
  名称：

  Synthesis of New Polydentate Nitrogen Ligands and Their Use in Ethylene Polymerization in Conjunction with Iron(II) and Cobalt(II) Bis-halides and Methylaluminoxane

  摘要：

  Original synthetic routes to polydentate nitrogen ligands combining in the same molecular structure either 2,6-bis(imino)pyridine and (imino)pyridine moieties or two 2,6-bis(imino)pyridine units are described. The tris-imino-bis-pyridine ligands (N-Me(5) and N-iPr(5)) and the tetrakis-imino-bis-pyridine ligand (N-iPr(6)) react with FeCl2 and/or CoX2 (X = Cl, Br) to give paramagnetic monometallic, homobimetallic, or heterobimetallic complexes. These have been characterized, both in the solid state and in solution, by a variety of techniques, including single-crystal X-ray diffraction analyses, magnetic susceptibility determinations, IR, vis-NIR, H-1 NMR, and X-band EPR spectroscopies. The combination of these analytical tools has allowed us to unravel the geometrical and electronic structure of quite complicated systems. Selected mono- and binuclear Fe-II and Co-II complexes have been used as catalyst precursors in toluene for the polymerization of ethylene to high-density polyethylene (HDPE) upon activation with MAO. From fairly good to very good catalytic activities (up to 64.5 tons of PE (mol of M)(-1) h(-1)) have been observed. Of particular relevance is the dicobalt complex (N6Co2Cl4)-N-iPr, which is more active than any other known Co-II catalyst for the polymerization of ethylene to HDPE.

  DOI：

  10.1021/om7005062