LiSn(PO3)4 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded in a distorted see-saw-like geometry to one O(12), one O(3), one O(6), and one O(9) atom. Sn(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(6), and one O(8) atom to form distorted SnO6 pentagonal pyramids that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 pentagonal pyramid,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. In the third P site, P(3) is bonded to one O(11), one O(12), one O(5), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 pentagonal pyramid,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. In the fourth P site, P(4) is bonded to one O(10), one O(11), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one P(2) and one P(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sn(1) and one P(4) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Li(1) and one P(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one P(3) and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Li(1), one Sn(1), and one P(3) atom.
LiSn(PO3)4 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded in a distorted see-saw-like geometry to one O(12), one O(3), one O(6), and one O(9) atom. The Li(1)-O(12) bond length is 2.19 Å. The Li(1)-O(3) bond length is 2.24 Å. The Li(1)-O(6) bond length is 2.27 Å. The Li(1)-O(9) bond length is 1.91 Å. Sn(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(6), and one O(8) atom to form distorted SnO6 pentagonal pyramids that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Sn(1)-O(10) bond length is 2.20 Å. The Sn(1)-O(12) bond length is 2.38 Å. The Sn(1)-O(2) bond length is 2.19 Å. The Sn(1)-O(3) bond length is 2.49 Å. The Sn(1)-O(6) bond length is 2.35 Å. The Sn(1)-O(8) bond length is 2.23 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The P(1)-O(1) bond length is 1.59 Å. The P(1)-O(3) bond length is 1.51 Å. The P(1)-O(5) bond length is 1.58 Å. The P(1)-O(6) bond length is 1.52 Å. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 pentagonal pyramid,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The P(2)-O(1) bond length is 1.63 Å. The P(2)-O(2) bond length is 1.52 Å. The P(2)-O(4) bond length is 1.47 Å. The P(2)-O(7) bond length is 1.64 Å. In the third P site, P(3) is bonded to one O(11), one O(12), one O(5), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 pentagonal pyramid,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The P(3)-O(11) bond length is 1.62 Å. The P(3)-O(12) bond length is 1.52 Å. The P(3)-O(5) bond length is 1.60 Å. The P(3)-O(9) bond length is 1.49 Å. In the fourth P site, P(4) is bonded to one O(10), one O(11), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The P(4)-O(10) bond length is 1.50 Å. The P(4)-O(11) bond length is 1.61 Å. The P(4)-O(7) bond length is 1.60 Å. The P(4)-O(8) bond length is 1.51 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one P(2) and one P(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sn(1) and one P(4) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Li(1) and one P(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one P(3) and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Li(1), one Sn(1), and one P(3) atom.