Mn2O3 is Hausmannite-like structured and crystallizes in the orthorhombic Pbca space group. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. In the second Mn site, Mn(2) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. In the third Mn site, Mn(3) 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 a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. In the fourth Mn site, Mn(4) 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 a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. In the fifth Mn site, Mn(5) 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 a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the second O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), one Mn(3), one Mn(4), and one Mn(5) atom. In the third O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the fourth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), one Mn(3), one Mn(4), and one Mn(5) atom. In the fifth O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the sixth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), one Mn(3), one Mn(4), and one Mn(5) atom.
Mn2O3 is Hausmannite-like structured and crystallizes in the orthorhombic Pbca space group. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. Both Mn(1)-O(1) bond lengths are 1.98 Å. Both Mn(1)-O(2) bond lengths are 1.99 Å. Both Mn(1)-O(3) bond lengths are 1.97 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. Both Mn(2)-O(4) bond lengths are 1.99 Å. Both Mn(2)-O(5) bond lengths are 1.97 Å. Both Mn(2)-O(6) bond lengths are 2.00 Å. In the third Mn site, Mn(3) 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 a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. The Mn(3)-O(1) bond length is 2.23 Å. The Mn(3)-O(2) bond length is 1.91 Å. The Mn(3)-O(3) bond length is 2.00 Å. The Mn(3)-O(4) bond length is 2.24 Å. The Mn(3)-O(5) bond length is 1.92 Å. The Mn(3)-O(6) bond length is 2.00 Å. In the fourth Mn site, Mn(4) 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 a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. The Mn(4)-O(1) bond length is 2.00 Å. The Mn(4)-O(2) bond length is 2.23 Å. The Mn(4)-O(3) bond length is 1.92 Å. The Mn(4)-O(4) bond length is 1.99 Å. The Mn(4)-O(5) bond length is 2.24 Å. The Mn(4)-O(6) bond length is 1.91 Å. In the fifth Mn site, Mn(5) 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 a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 47-61°. The Mn(5)-O(1) bond length is 1.92 Å. The Mn(5)-O(2) bond length is 1.99 Å. The Mn(5)-O(3) bond length is 2.25 Å. The Mn(5)-O(4) bond length is 1.92 Å. The Mn(5)-O(5) bond length is 2.00 Å. The Mn(5)-O(6) bond length is 2.22 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the second O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), one Mn(3), one Mn(4), and one Mn(5) atom. In the third O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the fourth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), one Mn(3), one Mn(4), and one Mn(5) atom. In the fifth O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the sixth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Mn(2), one Mn(3), one Mn(4), and one Mn(5) atom.