Materials Data on NiF3 by Materials Project
NiF3 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent Ni3+ sites. In the first Ni3+ site, Ni3+ is bonded to six equivalent F1- atoms to form corner-sharing NiF6 octahedra. The corner-sharing octahedral tilt angles are 40°. All Ni–F bond lengths are 1.90 Å. In the second Ni3+ site, Ni3+ is bonded to six equivalent F1- atoms to form corner-sharing NiF6 octahedra. The corner-sharing octahedral tilt angles are 40°. All Ni–F bond lengths are 1.93 Å. F1- is bonded in a bent 150 degrees geometry to two Ni3+ atoms.