RbK3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. There are two inequivalent K sites. In the first K site, K(1) is bonded in a body-centered cubic geometry to four equivalent Rb(1) and four equivalent K(2) atoms. In the second K site, K(2) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms.
RbK3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms. All Rb(1)-K(1) bond lengths are 4.72 Å. There are two inequivalent K sites. In the first K site, K(1) is bonded in a body-centered cubic geometry to four equivalent Rb(1) and four equivalent K(2) atoms. All K(1)-K(2) bond lengths are 4.72 Å. In the second K site, K(2) is bonded in a body-centered cubic geometry to eight equivalent K(1) atoms.