Rb2LiNb2(TeO6)2 crystallizes in the monoclinic C2/m space group. Rb(1) is bonded in a 7-coordinate geometry to one Li(1), one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Li(1) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent O(1), and four equivalent O(4) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form NbO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra and corners with four equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-45°. In the second Nb site, Nb(2) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-40°. Te(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form TeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, and corners with two equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-46°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Li(1), and two equivalent Te(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(1), one Nb(1), and one Nb(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Nb(2), and one Te(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Li(1), one Nb(1), and one Te(1) atom.
Rb2LiNb2(TeO6)2 crystallizes in the monoclinic C2/m space group. Rb(1) is bonded in a 7-coordinate geometry to one Li(1), one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. The Rb(1)-Li(1) bond length is 3.12 Å. The Rb(1)-O(1) bond length is 3.14 Å. The Rb(1)-O(2) bond length is 2.91 Å. Both Rb(1)-O(3) bond lengths are 2.88 Å. Both Rb(1)-O(4) bond lengths are 3.18 Å. Li(1) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent O(1), and four equivalent O(4) atoms. Both Li(1)-O(1) bond lengths are 2.61 Å. All Li(1)-O(4) bond lengths are 2.59 Å. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form NbO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra and corners with four equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-45°. Both Nb(1)-O(2) bond lengths are 1.99 Å. All Nb(1)-O(4) bond lengths are 2.03 Å. In the second Nb site, Nb(2) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-40°. Both Nb(2)-O(2) bond lengths are 2.00 Å. All Nb(2)-O(3) bond lengths are 2.02 Å. Te(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form TeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, and corners with two equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-46°. Both Te(1)-O(1) bond lengths are 2.01 Å. Both Te(1)-O(3) bond lengths are 1.99 Å. Both Te(1)-O(4) bond lengths are 1.99 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Li(1), and two equivalent Te(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(1), one Nb(1), and one Nb(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Nb(2), and one Te(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Li(1), one Nb(1), and one Te(1) atom.