Synthesis and characterization of [Co(NO2)2(acac) (IMH2py)] with one-electron-reduced imino nitroxide radical associated with unusual displacement of acetylacetonate in the starting complex trans-Na[Co(NO2)2(acac)2]

Terukazu Ishida, Takayoshi Suzuki, Sumio Kaizaki

Research output: Contribution to journalArticle

5 Citations (Scopus)


A reaction of trans-Na[Co(NO2)2(acac)2] with IM2py(2(2-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazol-1-oxyl) in methanol afforded trans-[Co(NO2) 2(acac)(IMH2py)](IMH2py=1-hydroxyl-2(2-pyridyl)-4, 4,5,5-tetramethyl-4,5-dihydro-1H-imidazole); one-electron reduction of the N-O radical moiety in IM2py and displacement of one of the two acac ligands with retention of two nitrito ligands in the starting complex during the reaction. This new complex was characterized by UV-Vis, 1H NMR spectra and X-ray analysis.

Original languageEnglish
Pages (from-to)3134-3138
Number of pages5
JournalInorganica Chimica Acta
Issue number11
Publication statusPublished - Aug 5 2004



  • Co(III) complex
  • Hydroxylamine tautomer
  • Imino nitroxide radical
  • Reduced imino nitroxide radical

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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