• Activation of dioxygen molecules on dinuclear metal centers

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Dioxygen molecule; catalytic oxidative reactions; cobalt peroxo complexes; transition metal species

    • Abstract


      Activation of dioxygen molecules on transition metal centers, especially dinuclear metal centers was systematically investigated using hydrotris(3,5-dialkylpyrazolyl)borate ligands from both organometallic and bioinorganic viewpoints. Physicochemical data and X-ray crystallography of synthesized dicopper-O2 complexes revealed aμ-η2:η2 coordination mode which was proposed as the most probable model ofoxyhemocyanin. Dioxygen species bound to dinuclear cobalt and nickel centers are quite active and react rapidly with C-H groups in ligands giving oxygenated products even at room temperature. The stability of (μ-η2:η2-O2)M2 complexes depends on the electron-donating ability of the central metal atoms and the difference arises mainly from the extent of back donation to the antibonding O-O orbital.

    • Author Affiliations


      Yoshihiko Moro-Oka1

      1. Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama - 226-8503, Japan
    • Dates

  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.