Characterisation of a coordinated imidazole as a structural model for superoxide dismutase

Robert I. Daly, Lisandra L. Martin

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The copper complex [Cu(HL)](ClO4)2 · 2H2O, where HL is N-[2-(4,7-dimethyl-1,4,7-triazacyclonon-1-yl)ethyl]-N- (benzimidazol-2-yl)methanimine, has been prepared and characterised by X-ray crystallography and solution absorption spectroscopy. Deprotonation of the benzimidazole moiety in this complex has been investigated by electronic spectroscopy. The results show a definite shift in γmax for [Cu(HL)]2+, at 632-818 nm for the deprotonated [CuL]+, in acetonitrile. This complex has been synthesised as a structural homologue to half of the enzyme Cu-Zn superoxide dismutase (SOD) which contains a bridged imidazolate moiety between the two Cu and Zn metal ions.

Original languageEnglish
Pages (from-to)777-781
Number of pages5
JournalInorganic Chemistry Communications
Issue number10
Publication statusPublished - 1 Oct 2002
Externally publishedYes


  • Biomimetic complex
  • Functionalised triazacyclononane
  • Superoxide dismutase

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