Owing to the infamous 'oxo wall', metal-ligand multiple bonds featuring late transition metals remain relatively rare. In recent years, several examples of low-coordinate transition metal imido fragments have been isolated and such complexes have been implicated as intermediates in novel C-H amination reactions. Our group has chosen to explore imido fragments in the context of both homo- and hetero-bimetallic systems.  Incorporation of metal-metal interactions and metal-ligand mutliple bonds into a single molecular framework has been explored in diiron complexes linked by a tris(phosphinoamide) ligand framework. The reactivity and redox chemistry of these unique complexes will be discussed. Furthermore, nitrene transfer from organic azides to a highly reduced Zr/Co heterobimetallic complex has recently been shown to result in a four-electron oxidation process and formation of unique bimetallic diimido species. The electronic structures and properties of these complexes will be presented.

Synthesis and reactivity of homobimetallic and heterobimetallic complexes featuring late transition metal imido fragments

248th National Meeting (2014)

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