Sc2Mn2O7 crystallizes in the cubic Fd-3m space group. Sc(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Mn(1) is bonded to six equivalent O(1) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sc(1) and two equivalent Mn(1) atoms to form distorted OSc2Mn2 tetrahedra that share corners with two equivalent O(2)Sc4 tetrahedra, corners with twelve equivalent O(1)Sc2Mn2 tetrahedra,  an edgeedge with one O(2)Sc4 tetrahedra, and edges with four equivalent O(1)Sc2Mn2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Sc(1) atoms to form OSc4 tetrahedra that share corners with four equivalent O(2)Sc4 tetrahedra, corners with twelve equivalent O(1)Sc2Mn2 tetrahedra, and edges with six equivalent O(1)Sc2Mn2 tetrahedra.
Sc2Mn2O7 crystallizes in the cubic Fd-3m space group. Sc(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. Both Sc(1)-O(2) bond lengths are 2.08 Å. All Sc(1)-O(1) bond lengths are 2.32 Å. Mn(1) is bonded to six equivalent O(1) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 51°. All Mn(1)-O(1) bond lengths are 1.88 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sc(1) and two equivalent Mn(1) atoms to form distorted OSc2Mn2 tetrahedra that share corners with two equivalent O(2)Sc4 tetrahedra, corners with twelve equivalent O(1)Sc2Mn2 tetrahedra,  an edgeedge with one O(2)Sc4 tetrahedra, and edges with four equivalent O(1)Sc2Mn2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Sc(1) atoms to form OSc4 tetrahedra that share corners with four equivalent O(2)Sc4 tetrahedra, corners with twelve equivalent O(1)Sc2Mn2 tetrahedra, and edges with six equivalent O(1)Sc2Mn2 tetrahedra.