Mn3Sn3(TeO8)2 is Hydrophilite-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 49°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form SnO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-49°. In the second Sn site, Sn(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form SnO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form TeO6 octahedra that share corners with two equivalent Sn(2)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. In the second Te site, Te(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form TeO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra,  an edgeedge with one Sn(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-49°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(2), one Sn(2), and one Te(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Sn(1) and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mn(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Mn(2) and one Sn(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Sn(1), and one Te(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Sn(1) and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent Mn(2) and one Te(1) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Mn(2), one Sn(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a trigonal non-coplanar geometry to two equivalent Mn(2) and one Sn(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Mn(1), one Sn(1), and one Te(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(2) and one Te(2) atom.
Mn3Sn3(TeO8)2 is Hydrophilite-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 49°. The Mn(1)-O(3) bond length is 2.11 Å. The Mn(1)-O(4) bond length is 2.07 Å. Both Mn(1)-O(11) bond lengths are 2.17 Å. Both Mn(1)-O(6) bond lengths are 2.26 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. The Mn(2)-O(1) bond length is 2.21 Å. The Mn(2)-O(10) bond length is 1.96 Å. The Mn(2)-O(12) bond length is 2.13 Å. The Mn(2)-O(5) bond length is 1.97 Å. The Mn(2)-O(8) bond length is 2.10 Å. The Mn(2)-O(9) bond length is 2.28 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form SnO6 octahedra that share corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-49°. The Sn(1)-O(11) bond length is 2.14 Å. The Sn(1)-O(2) bond length is 2.18 Å. The Sn(1)-O(3) bond length is 2.04 Å. The Sn(1)-O(4) bond length is 2.02 Å. The Sn(1)-O(6) bond length is 2.13 Å. The Sn(1)-O(7) bond length is 2.16 Å. In the second Sn site, Sn(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form SnO6 octahedra that share corners with two equivalent Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 49°. The Sn(2)-O(10) bond length is 2.09 Å. The Sn(2)-O(5) bond length is 2.05 Å. Both Sn(2)-O(1) bond lengths are 2.13 Å. Both Sn(2)-O(9) bond lengths are 2.14 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form TeO6 octahedra that share corners with two equivalent Sn(2)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. The Te(1)-O(2) bond length is 2.03 Å. The Te(1)-O(8) bond length is 1.95 Å. Both Te(1)-O(1) bond lengths are 1.97 Å. Both Te(1)-O(6) bond lengths are 1.97 Å. In the second Te site, Te(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form TeO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra,  an edgeedge with one Sn(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-49°. The Te(2)-O(12) bond length is 1.97 Å. The Te(2)-O(7) bond length is 2.07 Å. Both Te(2)-O(11) bond lengths are 1.95 Å. Both Te(2)-O(9) bond lengths are 1.97 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(2), one Sn(2), and one Te(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Sn(1) and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mn(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Mn(2) and one Sn(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Sn(1), and one Te(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Sn(1) and one Te(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent Mn(2) and one Te(1) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Mn(2), one Sn(2), and one Te(2) atom. In the tenth O site, O(10) is bonded in a trigonal non-coplanar geometry to two equivalent Mn(2) and one Sn(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Mn(1), one Sn(1), and one Te(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(2) and one Te(2) atom.