MgMn4ZnO8 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MgO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, edges with two equivalent Zn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, edges with two equivalent Zn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. In the third Mn site, Mn(3) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Zn(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. Zn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form ZnO6 octahedra that share corners with six equivalent Mn(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Mn(3), two equivalent Mn(2), and one Zn(1) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(1), one Mn(2), one Mn(3), and one Zn(1) atom to form a mixture of edge and corner-sharing OMgMn3Zn square pyramids. In the third O site, O(3) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), and two equivalent Mn(2) atoms.
MgMn4ZnO8 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MgO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, edges with two equivalent Zn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. Both Mg(1)-O(3) bond lengths are 2.13 Å. All Mg(1)-O(2) bond lengths are 2.13 Å. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, edges with two equivalent Zn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. Both Mn(1)-O(3) bond lengths are 2.24 Å. All Mn(1)-O(2) bond lengths are 2.23 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. Both Mn(2)-O(1) bond lengths are 1.97 Å. Both Mn(2)-O(2) bond lengths are 1.94 Å. Both Mn(2)-O(3) bond lengths are 1.97 Å. In the third Mn site, Mn(3) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Zn(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. Both Mn(3)-O(1) bond lengths are 2.22 Å. All Mn(3)-O(2) bond lengths are 2.21 Å. Zn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form ZnO6 octahedra that share corners with six equivalent Mn(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-15°. Both Zn(1)-O(1) bond lengths are 2.16 Å. All Zn(1)-O(2) bond lengths are 2.15 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Mn(3), two equivalent Mn(2), and one Zn(1) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(1), one Mn(2), one Mn(3), and one Zn(1) atom to form a mixture of edge and corner-sharing OMgMn3Zn square pyramids. In the third O site, O(3) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), and two equivalent Mn(2) atoms.