Li2Sn(BO3)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(5), one O(6), and two equivalent O(3) atoms. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form LiO4 trigonal pyramids that share corners with three equivalent Sn(1)O5 trigonal bipyramids. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(4), and one O(5) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. Sn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted SnO5 trigonal bipyramids that share corners with three equivalent Li(2)O4 trigonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(2), one B(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(2), one B(2), and one Sn(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Li(1), one B(2), and one Sn(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(2), one B(1), and one Sn(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(1), one Li(2), and one B(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one B(2), and one Sn(1) atom.
Li2Sn(BO3)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(5), one O(6), and two equivalent O(3) atoms. The Li(1)-O(5) bond length is 1.91 Å. The Li(1)-O(6) bond length is 2.11 Å. There is one shorter (2.03 Å) and one longer (2.05 Å) Li(1)-O(3) bond length. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form LiO4 trigonal pyramids that share corners with three equivalent Sn(1)O5 trigonal bipyramids. The Li(2)-O(1) bond length is 2.10 Å. The Li(2)-O(2) bond length is 1.95 Å. The Li(2)-O(4) bond length is 1.93 Å. The Li(2)-O(5) bond length is 1.89 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(4), and one O(5) atom. The B(1)-O(1) bond length is 1.43 Å. The B(1)-O(4) bond length is 1.42 Å. The B(1)-O(5) bond length is 1.33 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. The B(2)-O(2) bond length is 1.40 Å. The B(2)-O(3) bond length is 1.39 Å. The B(2)-O(6) bond length is 1.38 Å. Sn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted SnO5 trigonal bipyramids that share corners with three equivalent Li(2)O4 trigonal pyramids. The Sn(1)-O(1) bond length is 2.00 Å. The Sn(1)-O(2) bond length is 2.06 Å. The Sn(1)-O(3) bond length is 2.22 Å. The Sn(1)-O(4) bond length is 2.01 Å. The Sn(1)-O(6) bond length is 2.03 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(2), one B(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(2), one B(2), and one Sn(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Li(1), one B(2), and one Sn(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(2), one B(1), and one Sn(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(1), one Li(2), and one B(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one B(2), and one Sn(1) atom.