Premium
Electrochemically generated tungsten‐based active species as catalysts for metathesis‐related reactions: 2. Ring‐opening metathesis polymerization of norbornene
Author(s) -
Dereli Okan,
Düz Bülent,
ZümreoǧluKaran Birgül,
İmamoǧlu Yavuz
Publication year - 2004
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.569
Subject(s) - norbornene , chemistry , metathesis , polymerization , ring opening metathesis polymerisation , catalysis , polymer chemistry , double bond , salt metathesis reaction , tungsten , polymer , organic chemistry
Abstract The present work reports the application of the WCl 6 –e − –Al–CH 2 Cl 2 catalyst system to the ring‐opening metathesis polymerization of norbornene. Analysis of the polynorbornene microstructure by means of 1 H and 13 C NMR spectroscopy indicates that the polymer contains a mainly cis stereoconfiguration of the double bonds (σ c = 0.61) and a blocky distribution ( r t r c > 1) of cis and trans double bonds ( r t r c = 3.37). This catalytic system is reluctant to facilitate the competing addition reactions of cycloalkenes while proceeding with the polymerization reactions with good conversions and at short periods. Copyright © 2004 John Wiley & Sons, Ltd.