Materials Data on Fe3O4 by Materials Project

Fe3O4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent Fe+2.67+ sites. In the first Fe+2.67+ site, Fe+2.67+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 4–13°. There are a spread of Fe–O bond distances ranging from 2.03–2.34 Å. In the second Fe+2.67+ site, Fe+2.67+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 4–11°. There are two shorter (2.07 Å) and four longer (2.08 Å) Fe–O bond lengths. In the third Fe+2.67+ site, Fe+2.67+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 6–13°. There are two shorter (2.12 Å) and four longer (2.14 Å) Fe–O bond lengths. In the fourth Fe+2.67+ site, Fe+2.67+ is bonded to six O2- atoms to form edge-sharing FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.01–2.06 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a rectangular see-saw-like geometry to four Fe+2.67+ atoms. In the second O2- site, O2- is bonded to five Fe+2.67+ atoms to form a mixture of edge and corner-sharing OFe5 square pyramids. In the third O2- site, O2- is bonded to five Fe+2.67+ atoms to form a mixture of edge and corner-sharing OFe5 square pyramids. In the fourth O2- site, O2- is bonded in a rectangular see-saw-like geometry to four Fe+2.67+ atoms.