RbLiCrO4 crystallizes in the trigonal P31c space group. Rb(1) is bonded in a 9-coordinate geometry to three equivalent O(2) and six equivalent O(1) atoms. Li(1) is bonded to one O(2) and three equivalent O(1) atoms to form LiO4 tetrahedra that share corners with four equivalent Cr(1)O4 tetrahedra. Cr(1) is bonded to one O(2) and three equivalent O(1) atoms to form CrO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Li(1), and one Cr(1) atom. In the second O site, O(2) is bonded in a linear geometry to three equivalent Rb(1), one Li(1), and one Cr(1) atom.
RbLiCrO4 crystallizes in the trigonal P31c space group. Rb(1) is bonded in a 9-coordinate geometry to three equivalent O(2) and six equivalent O(1) atoms. All Rb(1)-O(2) bond lengths are 3.09 Å. There are three shorter (2.93 Å) and three longer (3.07 Å) Rb(1)-O(1) bond lengths. Li(1) is bonded to one O(2) and three equivalent O(1) atoms to form LiO4 tetrahedra that share corners with four equivalent Cr(1)O4 tetrahedra. The Li(1)-O(2) bond length is 1.91 Å. All Li(1)-O(1) bond lengths are 1.92 Å. Cr(1) is bonded to one O(2) and three equivalent O(1) atoms to form CrO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra. The Cr(1)-O(2) bond length is 1.64 Å. All Cr(1)-O(1) bond lengths are 1.64 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Li(1), and one Cr(1) atom. In the second O site, O(2) is bonded in a linear geometry to three equivalent Rb(1), one Li(1), and one Cr(1) atom.