Figure 2.

Top-left: Synthetic scheme for the formation of ^R[Fe₂N₂]⁰. Right: Crystal structure of ^Ph[Fe₂N₂]⁰ and illustration of the acute Fe–Ct_N2–Fe angle exhibited by this series of complexes. Bottom-left: View along the Fe–Fe vectors for ^Me[Fe₂Cl]⁺ and ^Me[Fe₂N₂]⁰, highlighting the change in the angle between i) a plane created by the imino nitrogens and the linker-carbons α to the imino nitrogens (N– C_α–C_α–N) and ii) a plane created by the three linker carbons (C_α–C_β–C_α).