Fe16N2 (space group: P6_3/mmc #194, crystal system: hexagonal, point group: 6/mmm)
Relaxed with Orb v3; 0.03 eV/Å threshold; final energy = -125.2039 eV; energy change = -0.2048 eV; symmetry: P6_3/mmc → P6_3/mmc