Dioxygen is essential in life processes, and enzymes activate dioxygen to carry out a variety of biological reactions. One primary goal in biomimetic research is to elucidate structures of reactive intermediates and mechanistic details of dioxygen activation and oxygenation reactions occurring at the active sites of enzymes. During the past decade, we have been studying the chemical and physical properties of various reactive intermediates in oxygenation reactions, such as high-valent iron(IV)-oxo complexes of non-heme ligands in oxo-transfer and C-H activation reactions, metal-peroxo complexes in nucleophilic reactions, and metal-superoxo complexes in electrophilic reactions. In this presentation, I will present our recent results on the synthesis and structural and spectroscopic characterization of mononuclear nonheme metal-dioxygen intermediates. Their reactivities in electrophilic and nucleophilic oxidation reactions will be discussed as well.

Structural and spectroscopic characterization and reactivities of metal-oxygen intermediates

243rd National Meeting (2012)

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