Ferrous rather than ferric species are the active sites in bis(imino)pyridine iron ethylene polymerization catalysts

被引：75
|
作者：
Bryliakov, KP
Semikolenova, NV
Zudin, VN
Zakharov, VA
Talsi, EP
机构：
[1] Russian Acad Sci, Siberian Branch, GK Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Dept Nat Sci, Novosibirsk 630090, Russia
来源：
CATALYSIS COMMUNICATIONS | 2004年 / 5卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
ethylene; iron; mechanism; polymerization; H-1; NMR; EPR;
D O I：
10.1016/j.catcom.2003.11.010
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
H-1 NMR and EPR spectroscopic studies show that the iron centers in bis(imino)pyridine iron(II) and bis(imino)pyridine iron(III) olefin polymerization pre-catalysts LFeCl2 and LFeCl3 (L=bis(imino)pyridine) are converted upon treatment with methylaluminoxane (MAO) into ferrous complexes of the type [L(Me)Fe(II)(mu-Me)(2)AlMe2] or [LFe(II)(mu-Me)(2)AlMe2](+)[Me-MAO](-). (C) 2003 Published by Elsevier B.V.
引用
收藏
页码：45 / 48
页数：4
相关论文
共 50 条
  • [31] Iron(II) coordination compounds with ω-alkenyl substituted bis(imino)pyridine ligands:: Self-immobilizing catalysts for the polymerization of ethylene
    Seitz, Marcus
    Milius, Wolfgang
    Alt, Helmut G.
    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2007, 261 (02) : 246 - 253
  • [32] Theoretical Study on a Multicenter Model Based on Different Metal Oxidation States for the Bis(imino)pyridine Iron Catalysts in Ethylene Polymerization
    Cruz, Victor L.
    Ramos, Javier
    Martinez-Salazar, Javier
    Gutierrez-Oliva, Soledad
    Toro-Labbe, Alejandro
    ORGANOMETALLICS, 2009, 28 (20) : 5889 - 5895
  • [33] Polymerization of ethylene with unsymmetric 2,6-bis(imino)pyridine iron(II) complex
    Ma, Zhi
    Sun, Wen-Hua
    Li, Zi-Long
    Shao, Chang-Xing
    Hu, You-Liang
    Chinese Journal of Polymer Science (English Edition), 2002, 20 (03): : 205 - 211
  • [34] Spin-dependent effects in ethylene polymerization with bis(imino) pyridine iron(II) complexes
    Minaev, Boris
    Baryshnikova, Alina
    Sun, Wen-Hua
    JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2016, 811 : 48 - 65
  • [35] Polymerization of ethylene with unsymmetric 2,6-bis(imino)pyridine iron(II) complex
    Ma, Z
    Sun, WH
    Li, ZL
    Shao, CX
    Hu, YL
    CHINESE JOURNAL OF POLYMER SCIENCE, 2002, 20 (03) : 205 - 211
  • [36] Ferrous and Cobaltous Chlorides Bearing 2,8-Bis(imino)quinolines: Highly Active Catalysts for Ethylene Polymerization at High Temperature
    Zhang, Shu
    Sun, Wen-Hua
    Xiao, Tianpengfei
    Hao, Xiang
    ORGANOMETALLICS, 2010, 29 (05) : 1168 - 1173
  • [37] Highly active iron/2.6-bis (imino) pyridyl catalysts for ethylene oligomerization
    Wang, H
    Yan, WD
    Jiang, T
    Liu, BB
    Xu, WQ
    Ma, JJ
    Hu, YL
    CHINESE CHEMICAL LETTERS, 2003, 14 (03) : 257 - 258
  • [38] Highly Active Iron/2.6-bis (imino) pyridyl Catalysts for Ethylene Oligomerization
    Hang WANG1
    Chinese Chemical Letters, 2003, (03) : 257 - 258
  • [39] In situ polymerization of ethylene with bis(imino)pyridine iron(II) catalysts supported on clay:: The synthesis and characterization of polyethylene-clay nanocomposites
    Ray, S
    Galgali, G
    Lele, A
    Sivaram, S
    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2005, 43 (02) : 304 - 318
  • [40] New bis(imino)pyridine-iron(II)- and cobalt(II)-based catalysts:: synthesis characterization and activity towards polymerization of ethylene
    Abu-Surrah, AS
    Lappalainen, K
    Piironen, U
    Lehmus, P
    Repo, T
    Leskelä, M
    JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2002, 648 (1-2) : 55 - 61
12345