Materials Data on Rb2NiF6 by Materials Project

Rb2NiF6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rb1+ is bonded to twelve equivalent F1- atoms to form RbF12 cuboctahedra that share corners with twelve equivalent RbF12 cuboctahedra, faces with six equivalent RbF12 cuboctahedra, and faces with four equivalent NiF6 octahedra. All Rb–F bond lengths are 3.06 Å. Ni4+ is bonded to six equivalent F1- atoms to form NiF6 octahedra that share faces with eight equivalent RbF12 cuboctahedra. All Ni–F bond lengths are 1.81 Å. F1- is bonded in a single-bond geometry to four equivalent Rb1+ and one Ni4+ atom.