Catalysis Letters

, 141:1608 | Cite as

Nickel(II) Dibromide Complexes Bearing Bis(benzimidazolyl)amine and Bis(benzimidazolyl)pyridine Ligands for Ethylene Oligomerizations

  • Gyeong Mi Lee
  • Vinu K. Appukuttan
  • Hongsuk Suh
  • Chang-Sik Ha
  • Il Kim


A series of bis(benzimidazolyl)amine and bis(benzimidazolyl)pyridine ligands and their respective nickel(II) dibromide complexes were synthesized and fully characterized. After activation of the nickel complexes with ethylaluminum sesquichloride showed productivity in excess of 106 (g-oligomer)(mol-Ni)−1h−1bar−1 towards ethylene oligomerization, producing butenes as major products. The bis(benzimidazolyl)pyridine nickel complexes showed higher activity and dimerization selectivity than corresponding bis(benzimidazolyl)amine nickel complexes.

Graphical Abstract

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Catalysis Ethylene oligomerization Ligands Nickel complex Transition metal catalysts 



This study was supported by grants-in-aid for the World Class University Program (No. R32-2008-000-10174-0) and the National Core Research Center Program from MEST (No. R15-2006- 022-01001-0).


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Gyeong Mi Lee
    • 1
  • Vinu K. Appukuttan
    • 1
  • Hongsuk Suh
    • 2
  • Chang-Sik Ha
    • 1
  • Il Kim
    • 1
  1. 1.Department of Polymer Science and Engineering, The WCU Centre for Synthetic Polymer Bioconjugate Hybrid MaterialsPusan National UniversityBusanKorea
  2. 2.Department of Chemistry and Chemistry Institute for Functional MaterialsPusan National UniversityPusanKorea

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