Sn3PO6 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(6) atom. In the second Sn site, Sn(2) is bonded in a rectangular see-saw-like geometry to one O(5), one O(6), and two equivalent O(2) atoms. In the third Sn site, Sn(3) is bonded in a 3-coordinate geometry to one O(1), one O(5), and one O(6) atom. P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are six inequivalent O sites. In the first O site, O(5) is bonded in a trigonal planar geometry to one Sn(1), one Sn(2), and one Sn(3) atom. In the second O site, O(6) is bonded in a trigonal planar geometry to one Sn(1), one Sn(2), and one Sn(3) atom. In the third O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Sn(3) and one P(1) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Sn(2) and one P(1) atom. In the fifth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(1) atom. In the sixth O site, O(4) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom.
Sn3PO6 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(6) atom. The Sn(1)-O(3) bond length is 2.19 Å. The Sn(1)-O(4) bond length is 2.16 Å. The Sn(1)-O(5) bond length is 2.24 Å. The Sn(1)-O(6) bond length is 2.26 Å. In the second Sn site, Sn(2) is bonded in a rectangular see-saw-like geometry to one O(5), one O(6), and two equivalent O(2) atoms. The Sn(2)-O(5) bond length is 2.13 Å. The Sn(2)-O(6) bond length is 2.08 Å. There is one shorter (2.18 Å) and one longer (2.43 Å) Sn(2)-O(2) bond length. In the third Sn site, Sn(3) is bonded in a 3-coordinate geometry to one O(1), one O(5), and one O(6) atom. The Sn(3)-O(1) bond length is 2.20 Å. The Sn(3)-O(5) bond length is 2.15 Å. The Sn(3)-O(6) bond length is 2.11 Å. P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(2) bond length is 1.57 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(4) bond length is 1.55 Å. There are six inequivalent O sites. In the first O site, O(5) is bonded in a trigonal planar geometry to one Sn(1), one Sn(2), and one Sn(3) atom. In the second O site, O(6) is bonded in a trigonal planar geometry to one Sn(1), one Sn(2), and one Sn(3) atom. In the third O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Sn(3) and one P(1) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Sn(2) and one P(1) atom. In the fifth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(1) atom. In the sixth O site, O(4) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom.