Na2SnTeO6 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(3), three equivalent O(1), and three equivalent O(2) atoms. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with six equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-31°. Te(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form TeO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-31°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent Na(1), one Sn(1), and one Te(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Na(1), one Sn(1), and one Te(1) atom. In the third O site, O(3) is bonded to two equivalent Na(1), one Sn(1), and one Te(1) atom to form distorted corner-sharing ONa2SnTe tetrahedra.
Na2SnTeO6 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(3), three equivalent O(1), and three equivalent O(2) atoms. There is one shorter (2.32 Å) and one longer (2.47 Å) Na(1)-O(3) bond length. There are a spread of Na(1)-O(1) bond distances ranging from 2.35-2.75 Å. There are a spread of Na(1)-O(2) bond distances ranging from 2.34-2.75 Å. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with six equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-31°. Both Sn(1)-O(1) bond lengths are 2.08 Å. Both Sn(1)-O(2) bond lengths are 2.10 Å. Both Sn(1)-O(3) bond lengths are 2.09 Å. Te(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form TeO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-31°. Both Te(1)-O(1) bond lengths are 1.96 Å. Both Te(1)-O(2) bond lengths are 1.95 Å. Both Te(1)-O(3) bond lengths are 1.96 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent Na(1), one Sn(1), and one Te(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Na(1), one Sn(1), and one Te(1) atom. In the third O site, O(3) is bonded to two equivalent Na(1), one Sn(1), and one Te(1) atom to form distorted corner-sharing ONa2SnTe tetrahedra.