Rb2Li14Pb3O14 crystallizes in the orthorhombic Immm space group. Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(4) atoms. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form LiO4 tetrahedra that share corners with two equivalent Pb(1)O6 octahedra, corners with two equivalent Pb(2)O6 octahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and edges with four equivalent Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-40°. In the second Li site, Li(2) is bonded to one O(3), one O(4), and two equivalent O(1) atoms to form distorted LiO4 tetrahedra that share  a cornercorner with one Pb(2)O6 octahedra, corners with two equivalent Pb(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Pb(1)O6 octahedra,  an edgeedge with one Li(2)O4 tetrahedra, and edges with two equivalent Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 3-40°. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Pb(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Pb(1)O6 octahedra,  an edgeedge with one Pb(2)O6 octahedra,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 67°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted PbO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Pb(2)O6 octahedra, edges with two equivalent Li(2)O4 tetrahedra, and edges with four equivalent Li(3)O4 tetrahedra. In the second Pb site, Pb(2) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form PbO6 octahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, edges with two equivalent Pb(1)O6 octahedra, and edges with eight equivalent Li(3)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Rb(1), two equivalent Li(2), two equivalent Li(3), and one Pb(1) atom. In the second O site, O(2) is bonded to two equivalent Li(1), four equivalent Li(3), and one Pb(2) atom to form a mixture of distorted corner and edge-sharing OLi6Pb hexagonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(3), one Pb(1), and one Pb(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Li(1), one Li(2), two equivalent Li(3), and one Pb(1) atom.
Rb2Li14Pb3O14 crystallizes in the orthorhombic Immm space group. Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(4) atoms. Both Rb(1)-O(1) bond lengths are 3.26 Å. All Rb(1)-O(4) bond lengths are 3.13 Å. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form LiO4 tetrahedra that share corners with two equivalent Pb(1)O6 octahedra, corners with two equivalent Pb(2)O6 octahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and edges with four equivalent Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-40°. Both Li(1)-O(2) bond lengths are 1.98 Å. Both Li(1)-O(4) bond lengths are 1.96 Å. In the second Li site, Li(2) is bonded to one O(3), one O(4), and two equivalent O(1) atoms to form distorted LiO4 tetrahedra that share  a cornercorner with one Pb(2)O6 octahedra, corners with two equivalent Pb(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Pb(1)O6 octahedra,  an edgeedge with one Li(2)O4 tetrahedra, and edges with two equivalent Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 3-40°. The Li(2)-O(3) bond length is 1.91 Å. The Li(2)-O(4) bond length is 2.14 Å. Both Li(2)-O(1) bond lengths are 1.95 Å. In the third Li site, Li(3) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Pb(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Pb(1)O6 octahedra,  an edgeedge with one Pb(2)O6 octahedra,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 67°. The Li(3)-O(1) bond length is 1.98 Å. The Li(3)-O(2) bond length is 2.18 Å. The Li(3)-O(3) bond length is 2.02 Å. The Li(3)-O(4) bond length is 1.97 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted PbO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra,  an edgeedge with one Pb(2)O6 octahedra, edges with two equivalent Li(2)O4 tetrahedra, and edges with four equivalent Li(3)O4 tetrahedra. Both Pb(1)-O(1) bond lengths are 2.17 Å. Both Pb(1)-O(3) bond lengths are 2.42 Å. Both Pb(1)-O(4) bond lengths are 2.19 Å. In the second Pb site, Pb(2) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form PbO6 octahedra that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, edges with two equivalent Pb(1)O6 octahedra, and edges with eight equivalent Li(3)O4 tetrahedra. Both Pb(2)-O(2) bond lengths are 2.18 Å. All Pb(2)-O(3) bond lengths are 2.24 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Rb(1), two equivalent Li(2), two equivalent Li(3), and one Pb(1) atom. In the second O site, O(2) is bonded to two equivalent Li(1), four equivalent Li(3), and one Pb(2) atom to form a mixture of distorted corner and edge-sharing OLi6Pb hexagonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(3), one Pb(1), and one Pb(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Li(1), one Li(2), two equivalent Li(3), and one Pb(1) atom.