Mn2Pb2O5 is Pb (Zr_0.50 Ti_0.48) O_3-like structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), and three equivalent O(5) atoms to form distorted MnO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(1)O5 square pyramids, and edges with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 8-9°. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra and corners with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 9-12°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(3), and two equivalent O(4) atoms. In the second Pb site, Pb(2) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(2) atoms. There are five inequivalent O sites. In the first O site, O(5) is bonded in a distorted T-shaped geometry to three equivalent Mn(1) atoms. In the second O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Mn(2), one Pb(1), and one Pb(2) atom. In the third O site, O(2) is bonded in a distorted see-saw-like geometry to two equivalent Mn(2) and two equivalent Pb(2) atoms. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to one Mn(1), one Mn(2), and two equivalent Pb(1) atoms. In the fifth O site, O(4) is bonded in a distorted see-saw-like geometry to one Mn(1), one Mn(2), and two equivalent Pb(1) atoms.
Mn2Pb2O5 is Pb (Zr_0.50 Ti_0.48) O_3-like structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), and three equivalent O(5) atoms to form distorted MnO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(1)O5 square pyramids, and edges with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 8-9°. The Mn(1)-O(3) bond length is 1.93 Å. The Mn(1)-O(4) bond length is 2.11 Å. There are two shorter (2.01 Å) and one longer (2.03 Å) Mn(1)-O(5) bond length. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra and corners with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 9-12°. The Mn(2)-O(3) bond length is 2.14 Å. The Mn(2)-O(4) bond length is 2.04 Å. Both Mn(2)-O(1) bond lengths are 1.97 Å. There is one shorter (2.03 Å) and one longer (2.06 Å) Mn(2)-O(2) bond length. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(3), and two equivalent O(4) atoms. The Pb(1)-O(1) bond length is 2.37 Å. Both Pb(1)-O(3) bond lengths are 2.59 Å. Both Pb(1)-O(4) bond lengths are 2.52 Å. In the second Pb site, Pb(2) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(2) atoms. The Pb(2)-O(1) bond length is 2.56 Å. Both Pb(2)-O(2) bond lengths are 2.51 Å. There are five inequivalent O sites. In the first O site, O(5) is bonded in a distorted T-shaped geometry to three equivalent Mn(1) atoms. In the second O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Mn(2), one Pb(1), and one Pb(2) atom. In the third O site, O(2) is bonded in a distorted see-saw-like geometry to two equivalent Mn(2) and two equivalent Pb(2) atoms. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to one Mn(1), one Mn(2), and two equivalent Pb(1) atoms. In the fifth O site, O(4) is bonded in a distorted see-saw-like geometry to one Mn(1), one Mn(2), and two equivalent Pb(1) atoms.