Dinuclear Nickel(II) and Palladium(II) Complexes in Combination with Different Co-Catalysts as Highly Active Catalysts for the Vinyl/Addition Polymerization of Norbornene

Vasile Lozan, Paul Gerhard Lassahn, Cungen Zhang, Biao Wu, Christoph Janiak*, Gerd Rheinwald, Heinrich Lang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)

Abstract

Dinuclear nickel(II) and palladium(II) complexes with Schiff-base ligands (derived form salicylaldehyde condensed with 2-amino-1-alcohols or from 2-hydroxy-5-methylisophthaldialdehyde and pyridine-2-carboxaldehyde condensed with semicarbazide, thiosemicarbazide, carbonodihydrazide, or thiocarbonodihydrazide) can be activated with the co-catalysts methylalumoxane (MAO) or tris(pentafluorophenyl)borane/triethylaluminium, B (C6F 5)3/AlEt3 for the vinyl/addition polymerization of norbornene to reach activities of up to 2.4·107 g polymer/mol(metal)·h (molar ratios metal:AlMAO = 1:100, metal:borane:AlEt3 = 1:9:10). Polymer characterization by GPC gave molar mass distributions of Mw/Mn ≈ 2, thereby indicating a coordination polymerization with a single-site character of the active species.

Original languageEnglish
Pages (from-to)1152-1164
Number of pages13
JournalZeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Volume58
Issue number12
DOIs
Publication statusPublished - Dec 2003
Externally publishedYes

Keywords

  • Co-Catalyst
  • Nickel
  • Norbornene
  • Palladium
  • Polymerization

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