MnTe2O5 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), and one O(9) atom to form distorted edge-sharing MnO6 octahedra. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted edge-sharing MnO6 octahedra. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted see-saw-like geometry to one O(10), one O(3), one O(7), and one O(9) atom. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(10), one O(4), one O(7), and one O(9) atom. In the third Te site, Te(3) is bonded in a distorted see-saw-like geometry to one O(2), one O(5), one O(6), and one O(8) atom. In the fourth Te site, Te(4) is bonded in a distorted see-saw-like geometry to one O(1), one O(5), one O(6), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(4) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(3) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(2), one Te(3), and one Te(4) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(2), one Te(3), and one Te(4) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Te(1) and one Te(2) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Te(3) and one Te(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mn(1), one Te(1), and one Te(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(1), one Te(1), and one Te(2) atom.
MnTe2O5 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), and one O(9) atom to form distorted edge-sharing MnO6 octahedra. The Mn(1)-O(1) bond length is 2.16 Å. The Mn(1)-O(10) bond length is 2.25 Å. The Mn(1)-O(2) bond length is 2.17 Å. The Mn(1)-O(3) bond length is 2.12 Å. The Mn(1)-O(4) bond length is 2.12 Å. The Mn(1)-O(9) bond length is 2.26 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted edge-sharing MnO6 octahedra. The Mn(2)-O(1) bond length is 2.14 Å. The Mn(2)-O(2) bond length is 2.13 Å. The Mn(2)-O(3) bond length is 2.16 Å. The Mn(2)-O(4) bond length is 2.16 Å. The Mn(2)-O(5) bond length is 2.18 Å. The Mn(2)-O(6) bond length is 2.19 Å. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted see-saw-like geometry to one O(10), one O(3), one O(7), and one O(9) atom. The Te(1)-O(10) bond length is 1.90 Å. The Te(1)-O(3) bond length is 1.90 Å. The Te(1)-O(7) bond length is 2.04 Å. The Te(1)-O(9) bond length is 2.42 Å. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(10), one O(4), one O(7), and one O(9) atom. The Te(2)-O(10) bond length is 2.42 Å. The Te(2)-O(4) bond length is 1.90 Å. The Te(2)-O(7) bond length is 2.04 Å. The Te(2)-O(9) bond length is 1.90 Å. In the third Te site, Te(3) is bonded in a distorted see-saw-like geometry to one O(2), one O(5), one O(6), and one O(8) atom. The Te(3)-O(2) bond length is 1.89 Å. The Te(3)-O(5) bond length is 2.44 Å. The Te(3)-O(6) bond length is 1.90 Å. The Te(3)-O(8) bond length is 2.03 Å. In the fourth Te site, Te(4) is bonded in a distorted see-saw-like geometry to one O(1), one O(5), one O(6), and one O(8) atom. The Te(4)-O(1) bond length is 1.89 Å. The Te(4)-O(5) bond length is 1.90 Å. The Te(4)-O(6) bond length is 2.44 Å. The Te(4)-O(8) bond length is 2.03 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(4) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(3) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(2), one Te(3), and one Te(4) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(2), one Te(3), and one Te(4) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Te(1) and one Te(2) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Te(3) and one Te(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mn(1), one Te(1), and one Te(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(1), one Te(1), and one Te(2) atom.