Ring-opening polymerization of norbornene by η-cycloheptatrienyl molybdenum and tungsten complexes

被引：9
|
作者：
Yeung, YO [1 ]
Ng, ACH [1 ]
Ng, DKP [1 ]
机构：
[1] Chinese Univ Hong Kong, Dept Chem, Shatin, NT, Peoples R China
来源：
INORGANICA CHIMICA ACTA | 1999年 / 288卷 / 02期
关键词：
ring-opening polymerization; norbornene; molybdenum complexes; tungsten complexes; cycloheptatrienyl complexes;
D O I：
10.1016/S0020-1693(99)00076-6
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The eta-cycloheptatrienyl complexes [M(eta-C7H7)LI2] (M = Mo, W; L -MeCN, PPh3), activated with Me3SiCH2MgCl catalyze the ring-opening polymerization of norbornene to give high molecular weight, poly(1,3-cyclopentylenevinylene) in high yield. By using the molybdenum complexes essentially all of the double bonds in the resulting polymers are in the trans-configuration as revealed by C-13 NMR spectrometry. The tungsten catalyst [W(eta-C7H7)(MeCN)I-2]exhibits higher reactivity toward this ring-opening polymerization but:lower stereoselectivity in comparison with the molybdenum analogs. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：226 / 228
页数：3
相关论文
共 50 条
  • [1] Ring-opening metathesis polymerization of norbornene and norbornadiene by tungsten(II) and molybdenum(II) complexes
    Czelusniak, I
    Szymanska-Buzar, T
    [J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2002, 190 (1-2) : 131 - 143
  • [2] CONTROLLED RING-OPENING METATHESIS POLYMERIZATION BY MOLYBDENUM AND TUNGSTEN ALKYLIDENE COMPLEXES
    SCHROCK, RR
    KROUSE, SA
    KNOLL, K
    FELDMAN, J
    MURDZEK, JS
    YANG, DC
    [J]. JOURNAL OF MOLECULAR CATALYSIS, 1988, 46 (1-3): : 243 - 253
  • [3] RING-OPENING POLYMERIZATION OF NORBORNENE BY A LIVING TUNGSTEN ALKYLIDENE COMPLEX
    SCHROCK, RR
    FELDMAN, J
    CANNIZZO, LF
    GRUBBS, RH
    [J]. MACROMOLECULES, 1987, 20 (05) : 1169 - 1172
  • [4] Ring-Opening Metathesis Polymerization of 5,6-Bis(Chloromethyl)-Norbornene by Tungsten(II) and Molybdenum(II) Complexes
    Izabela Czeluśniak
    Teresa Szymańska-Buzar
    Alan Kenwright
    Ezat Khosravi
    [J]. Catalysis Letters, 2002, 81 : 157 - 161
  • [5] Ring-opening metathesis polymerization of 5,6-bis(chloromethyl)-norbornene by tungsten(II) and molybdenum(II) complexes
    Czelusniak, I
    Szymanska-Buzar, T
    Kenwright, A
    Khosravi, E
    [J]. CATALYSIS LETTERS, 2002, 81 (3-4) : 157 - 161
  • [6] Ring-Opening Metathesis Polymerization of Norbornene with Catecholato Complexes of Tungsten(VI) as Effective Catalyst Precursors
    Yuushou Nakayama
    Kouhei Katsuda
    Hajime Yasuda
    [J]. Polymer Journal, 2003, 35 : 896 - 900
  • [7] RING-OPENING POLYMERIZATION OF NORBORNENE INITIATED BY TUNGSTEN ALKYLIDENE COMPLEXES - ACTIVATION BY ALCL3
    LEYMET, I
    SIOVE, A
    PARLIER, A
    RUDLER, H
    FONTANILLE, M
    [J]. MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS, 1989, 190 (10): : 2397 - 2405
  • [8] Ring-opening metathesis polymerization of norbornene with catecholato complexes of tungsten(VI) as effective catalyst precursors
    Nakayama, Y
    Katsuda, K
    Yasuda, H
    [J]. POLYMER JOURNAL, 2003, 35 (11) : 896 - 900
  • [9] Stereospecific Ring-Opening Metathesis Polymerization of Norbornene Catalyzed by Iron Complexes
    Belov, Dmitry S.
    Mathivathanan, Logesh
    Beazley, Melanie J.
    Martin, William Blake
    Bukhryakov, Konstantin V.
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2021, 60 (06) : 2934 - 2938
  • [10] Ring-opening metathesis polymerization of norbornene catalyzed by substituted titanocene complexes
    Qian, YL
    Zhang, DF
    Huang, JL
    Ma, HY
    Chan, ASC
    [J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1998, 133 (1-2) : 135 - 138
12345