LiSnPO4 crystallizes in the orthorhombic P2_12_12_1 space group. Li(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted LiO5 square pyramids that share corners with five equivalent Sn(1)O6 pentagonal pyramids, corners with two equivalent Li(1)O5 square pyramids,  a cornercorner with one P(1)O4 tetrahedra,  an edgeedge with one Sn(1)O6 pentagonal pyramid, and edges with two equivalent P(1)O4 tetrahedra. Sn(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted SnO6 pentagonal pyramids that share corners with four equivalent Sn(1)O6 pentagonal pyramids, corners with five equivalent Li(1)O5 square pyramids, corners with four equivalent P(1)O4 tetrahedra,  an edgeedge with one Li(1)O5 square pyramid, and  an edgeedge with one P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with four equivalent Sn(1)O6 pentagonal pyramids,  a cornercorner with one Li(1)O5 square pyramid,  an edgeedge with one Sn(1)O6 pentagonal pyramid, and edges with two equivalent Li(1)O5 square pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Sn(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Sn(1), and one P(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(1), one Sn(1), and one P(1) atom to form distorted corner-sharing OLi2SnP trigonal pyramids.
LiSnPO4 crystallizes in the orthorhombic P2_12_12_1 space group. Li(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted LiO5 square pyramids that share corners with five equivalent Sn(1)O6 pentagonal pyramids, corners with two equivalent Li(1)O5 square pyramids,  a cornercorner with one P(1)O4 tetrahedra,  an edgeedge with one Sn(1)O6 pentagonal pyramid, and edges with two equivalent P(1)O4 tetrahedra. The Li(1)-O(1) bond length is 2.13 Å. The Li(1)-O(2) bond length is 2.21 Å. The Li(1)-O(3) bond length is 2.21 Å. There is one shorter (2.18 Å) and one longer (2.21 Å) Li(1)-O(4) bond length. Sn(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted SnO6 pentagonal pyramids that share corners with four equivalent Sn(1)O6 pentagonal pyramids, corners with five equivalent Li(1)O5 square pyramids, corners with four equivalent P(1)O4 tetrahedra,  an edgeedge with one Li(1)O5 square pyramid, and  an edgeedge with one P(1)O4 tetrahedra. The Sn(1)-O(3) bond length is 2.72 Å. The Sn(1)-O(4) bond length is 2.35 Å. There is one shorter (2.47 Å) and one longer (2.58 Å) Sn(1)-O(1) bond length. There is one shorter (2.45 Å) and one longer (2.59 Å) Sn(1)-O(2) bond length. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with four equivalent Sn(1)O6 pentagonal pyramids,  a cornercorner with one Li(1)O5 square pyramid,  an edgeedge with one Sn(1)O6 pentagonal pyramid, and edges with two equivalent Li(1)O5 square pyramids. The P(1)-O(1) bond length is 1.58 Å. The P(1)-O(2) bond length is 1.58 Å. The P(1)-O(3) bond length is 1.53 Å. The P(1)-O(4) bond length is 1.58 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Sn(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Sn(1), and one P(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(1), one Sn(1), and one P(1) atom to form distorted corner-sharing OLi2SnP trigonal pyramids.