Cobalt(II) complexes of nitrile-functionalized ionic liquids

Peter Nockemann, Michael Pellens, Kristof Van Hecke, Luc Van Meervelt, Johan Wouters, Ben Thijs, Evert Vanecht, Tatjana N. Parac-Vogt, Hasan Mehdi, Stijn Schaltin, Jan Fransaer, Stefan Zahn, Barbara Kirchner, Koen Binnemans

Research output: Contribution to journalArticlepeer-review


A series of nitrile-functionalized ionic liquids were found to exhibit temperature-dependent miscibility (thermomorphism) with the lower alcohols. Their coordinating abilities toward cobalt(II) ions were investigated through the dissolution process of cobalt(II) bis(trifluoromethylsulfonyl)-imide and were found to depend on the donor abilities of the nitrile group. The crystal structures of the cobalt(II) solvates [Co(C1C1CNPyr) 2(Tf2N)4] and [Co(C1C 2CNPyr)6][Tf2N]8, which were isolated from ionic-liquid solutions, gave an insight into the coordination chemistry of functionalized ionic liquids. Smooth layers of cobalt metal could be obtained by electrodeposition of the cobalt-containing ionic liquids.

Original languageEnglish
Pages (from-to)1849-1858
Number of pages10
JournalChemistry: A European Journal
Issue number6
Publication statusPublished - 8 Feb 2010


  • Cobalt
  • Coordination compounds
  • Crystal structure
  • Electrodeposition
  • Ionic liquids


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