Figure 3
From: Novel triadius-like N4 specie of iron nitride compounds under high pressure
(a) The structural feature of N4 unit with Fe in the P63/mcm-FeN2. (b) The ELF plots (001) of P63/mcm structure at 250 GPa with an isosurface value of 0.75. (c) The ELF plots of N4 unit in the P63/mcm structure at 250 GPa. (d) The atomic model for hypothetic N4 cluster with typical symmetry operations marked out. (e) The orbital interaction diagram of a N4 unit with Fe atom.
