Low coordinate iron and cobalt complexes are sought after for their catalytic applications as well as their potential as bond activators. Most of the two-coordinate iron and cobalt species are in the formal +II oxidation state, and are stabilized with extremely bulky X-type ligands. Formally zero-valent two-coordinate transition metal species are exceedingly rare and neither two-coordinate Fe(0) nor Co(0) complexes have been characterized to date. We will present the synthesis of neutral two-coordinate mononuclear iron and cobalt complexes using the vital cyclic (alkyl)(amino)carbenes as ligands. Their unusual properties and reactivity will also be discussed.

Stabilization of mononuclear two-coordinate Fe(0) and Co(0) complexes

248th National Meeting (2014)

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