ThCu3Mn4O12 crystallizes in the cubic Im-3 space group. Th(1) is bonded to twelve equivalent O(1) atoms to form ThO12 cuboctahedra that share faces with eight equivalent Mn(1)O6 octahedra. 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 Th(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 41°. Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to one Th(1), two equivalent Mn(1), and one Cu(1) atom to form a mixture of distorted corner and edge-sharing OThMn2Cu tetrahedra.
ThCu3Mn4O12 crystallizes in the cubic Im-3 space group. Th(1) is bonded to twelve equivalent O(1) atoms to form ThO12 cuboctahedra that share faces with eight equivalent Mn(1)O6 octahedra. All Th(1)-O(1) bond lengths are 2.59 Å. 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 Th(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 41°. All Mn(1)-O(1) bond lengths are 2.00 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 1.97 Å. O(1) is bonded to one Th(1), two equivalent Mn(1), and one Cu(1) atom to form a mixture of distorted corner and edge-sharing OThMn2Cu tetrahedra.