Synthesis, structural and theoretical studies of an iron-gallium(I) heterocycle complex: analogies with N-heterocyclic carbene chemistry

The first iron complex of an anionic gallium N-heterocyclic carbene analogue, [Fe(CO)4{Ga[N(Ar)C(H)]2}]− Ar = C6H3Pri2-2,6, has been prepared and shown to have an unusual polymeric structure in the solid state; theoretical studies have pointed toward minimal Fe → Ga back-bonding in this complex