Mn4Al(CuO4)3 crystallizes in the cubic Im-3 space group. Mn(1) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra and faces with two equivalent Al(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 40°. Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. Al(1) is bonded to twelve equivalent O(1) atoms to form AlO12 cuboctahedra that share faces with eight equivalent Mn(1)O6 octahedra. O(1) is bonded in a 3-coordinate geometry to two equivalent Mn(1), one Cu(1), and one Al(1) atom.
Mn4Al(CuO4)3 crystallizes in the cubic Im-3 space group. Mn(1) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra and faces with two equivalent Al(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 40°. All Mn(1)-O(1) bond lengths are 1.94 Å. Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Cu(1)-O(1) bond lengths are 1.96 Å. Al(1) is bonded to twelve equivalent O(1) atoms to form AlO12 cuboctahedra that share faces with eight equivalent Mn(1)O6 octahedra. All Al(1)-O(1) bond lengths are 2.48 Å. O(1) is bonded in a 3-coordinate geometry to two equivalent Mn(1), one Cu(1), and one Al(1) atom.