The reaction of μ-η22-peroxo- and bis(μ-oxo)dicopper complexes with flavonol

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The [Cu2(μ-O)2]2+ and [Cu 2(μ-η22-O)2] 2+ motifs with coordinated N,N,N-tribenzyl-1,4,7-triazacyclononane and N,N,N-triisopropyl-1,4,7-triazacyclononane auxiliary ligands in their reaction with flavonol do not lead to ring scission products of the heterocycle, but the formation of the corresponding (flavonolato)copper(II) complexes [Cu(fla)(Bz-TAC)]ClO4 and [Cu(fla)(iPr-TAC)]ClO4. The subsequent oxygenolysis of the coordinated flavonolate ligand leads to O-benzoylsalicylate at elevated temperature, resulting in the enzyme mimicking products [Cu(O-bs)(Bz-TAC)]ClO4, [Cu(O-bs)(iPr-TAC)]ClO4) as well as carbon monoxide. The X-ray structures of [Cu(fla)(Bz-TAC)]ClO 4, [Cu(O-bs)(Bz-TAC)]ClO4, and [Cu(O-bs)(iPr-TAC)]ClO 4) are presented.

Original languageEnglish
Pages (from-to)2253-2259
Number of pages7
JournalEuropean Journal of Inorganic Chemistry
Issue number11
Publication statusPublished - Jun 7 2004


  • Copper
  • Flavonol
  • Model compounds
  • Oxygen
  • Quercetinase

ASJC Scopus subject areas

  • Inorganic Chemistry

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