Mn7CdO12 crystallizes in the cubic Im-3 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. In the second Mn site, Mn(2) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with six equivalent Mn(2)O6 octahedra and faces with two equivalent Cd(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 41°. Cd(1) is bonded to twelve equivalent O(1) atoms to form CdO12 cuboctahedra that share faces with eight equivalent Mn(2)O6 octahedra. O(1) is bonded in a 3-coordinate geometry to one Mn(1), two equivalent Mn(2), and one Cd(1) atom.
Mn7CdO12 crystallizes in the cubic Im-3 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Mn(1)-O(1) bond lengths are 1.96 Å. In the second Mn site, Mn(2) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with six equivalent Mn(2)O6 octahedra and faces with two equivalent Cd(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 41°. All Mn(2)-O(1) bond lengths are 2.00 Å. Cd(1) is bonded to twelve equivalent O(1) atoms to form CdO12 cuboctahedra that share faces with eight equivalent Mn(2)O6 octahedra. All Cd(1)-O(1) bond lengths are 2.68 Å. O(1) is bonded in a 3-coordinate geometry to one Mn(1), two equivalent Mn(2), and one Cd(1) atom.