LiNb8O10 crystallizes in the tetragonal I4_1/amd space group. Li(1) is bonded to four equivalent O(2) atoms to form LiO4 tetrahedra that share corners with eight equivalent Nb(1)O5 square pyramids. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(2) and three equivalent O(1) atoms to form NbO5 square pyramids that share corners with two equivalent Li(1)O4 tetrahedra and edges with four equivalent Nb(1)O5 square pyramids. In the second Nb site, Nb(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Nb(2) and three equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Nb(2), and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a square co-planar geometry to four equivalent Nb(2) atoms.
LiNb8O10 crystallizes in the tetragonal I4_1/amd space group. Li(1) is bonded to four equivalent O(2) atoms to form LiO4 tetrahedra that share corners with eight equivalent Nb(1)O5 square pyramids. All Li(1)-O(2) bond lengths are 1.98 Å. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(2) and three equivalent O(1) atoms to form NbO5 square pyramids that share corners with two equivalent Li(1)O4 tetrahedra and edges with four equivalent Nb(1)O5 square pyramids. Both Nb(1)-O(2) bond lengths are 2.09 Å. There are two shorter (2.12 Å) and one longer (2.27 Å) Nb(1)-O(1) bond length. In the second Nb site, Nb(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. The Nb(2)-O(1) bond length is 2.21 Å. The Nb(2)-O(2) bond length is 2.16 Å. Both Nb(2)-O(3) bond lengths are 2.20 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Nb(2) and three equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Nb(2), and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a square co-planar geometry to four equivalent Nb(2) atoms.