LiSnP2O7 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(3) atoms. Sn(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and two equivalent O(4) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(7) atom. In the second P site, P(2) is bonded in a 3-coordinate geometry to one O(3), one O(5), one O(6), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Sn(1) and one P(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Sn(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Sn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Li(1), one Sn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Sn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one P(1) and one P(2) atom.
LiSnP2O7 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(3) atoms. The Li(1)-O(5) bond length is 1.67 Å. There is one shorter (2.10 Å) and one longer (2.30 Å) Li(1)-O(3) bond length. Sn(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and two equivalent O(4) atoms. The Sn(1)-O(1) bond length is 2.79 Å. The Sn(1)-O(2) bond length is 2.64 Å. The Sn(1)-O(5) bond length is 2.69 Å. The Sn(1)-O(6) bond length is 2.15 Å. There is one shorter (2.36 Å) and one longer (2.53 Å) Sn(1)-O(4) bond length. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(7) atom. The P(1)-O(1) bond length is 1.43 Å. The P(1)-O(2) bond length is 1.16 Å. The P(1)-O(4) bond length is 2.08 Å. The P(1)-O(7) bond length is 1.90 Å. In the second P site, P(2) is bonded in a 3-coordinate geometry to one O(3), one O(5), one O(6), and one O(7) atom. The P(2)-O(3) bond length is 1.36 Å. The P(2)-O(5) bond length is 1.55 Å. The P(2)-O(6) bond length is 1.32 Å. The P(2)-O(7) bond length is 2.36 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Sn(1) and one P(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Sn(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Sn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Li(1), one Sn(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Sn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one P(1) and one P(2) atom.