Figure 2
From: Novel triadius-like N4 specie of iron nitride compounds under high pressure
Structures of predicted stable FeN2 and FeN4 crystals: (a) The P63/mcm structure of FeN2, viewing of the FeN6 and N4 unit. (b) Low pressure P-1 structure of FeN4. (b) the HP Cmmm-FeN4.
