We have discovered convenient synthetic procedures for the preparation of mononuclear imido complexes of uranium (IV, V and VI). These compounds have allowed us to explore and compare the reaction chemistry and bonding in uranium complexes that have the same or very similar ligand sets in three different oxidation states. The redox chemistry of these compounds will be discussed as will the reactivity of the imido groups with electrophiles. Changes in the reactivity of the imido groups as a function of oxidation state correlate with changes in the calculated U-N orbital interactions that make up the uranium-nitrogen multiple bonds in these compounds. The relationship between the observed reactivity and the evolving view of covalency in U-L bonding will be discussed.

Synthesis, bonding and reactivity of uranium (IV-VI) imido complexes

247th National Meeting (2014)

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