Rb2Li4UO6 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. In the second Li site, Li(2) is bonded to six equivalent O(1) atoms to form distorted LiO6 octahedra that share faces with two equivalent U(1)O6 octahedra. U(1) is bonded to six equivalent O(1) atoms to form UO6 octahedra that share faces with two equivalent Li(2)O6 octahedra. O(1) is bonded in a 5-coordinate geometry to one Rb(1), one Li(2), two equivalent Li(1), and one U(1) atom.
Rb2Li4UO6 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. All Rb(1)-O(1) bond lengths are 2.71 Å. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Li(1)-O(1) bond lengths are 2.14 Å. In the second Li site, Li(2) is bonded to six equivalent O(1) atoms to form distorted LiO6 octahedra that share faces with two equivalent U(1)O6 octahedra. All Li(2)-O(1) bond lengths are 2.45 Å. U(1) is bonded to six equivalent O(1) atoms to form UO6 octahedra that share faces with two equivalent Li(2)O6 octahedra. All U(1)-O(1) bond lengths are 2.09 Å. O(1) is bonded in a 5-coordinate geometry to one Rb(1), one Li(2), two equivalent Li(1), and one U(1) atom.