Ge2O3 crystallizes in the cubic Pm-3m space group. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to twelve equivalent O(1) atoms to form distorted GeO12 cuboctahedra that share corners with twelve equivalent Ge(1)O12 cuboctahedra, faces with six equivalent Ge(1)O12 cuboctahedra, and faces with eight equivalent Ge(2)O6 octahedra. In the second Ge site, Ge(2) is bonded to six equivalent O(1) atoms to form GeO6 octahedra that share corners with six equivalent Ge(2)O6 octahedra and faces with eight equivalent Ge(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. O(1) is bonded in a linear geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms.
Ge2O3 crystallizes in the cubic Pm-3m space group. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to twelve equivalent O(1) atoms to form distorted GeO12 cuboctahedra that share corners with twelve equivalent Ge(1)O12 cuboctahedra, faces with six equivalent Ge(1)O12 cuboctahedra, and faces with eight equivalent Ge(2)O6 octahedra. All Ge(1)-O(1) bond lengths are 2.64 Å. In the second Ge site, Ge(2) is bonded to six equivalent O(1) atoms to form GeO6 octahedra that share corners with six equivalent Ge(2)O6 octahedra and faces with eight equivalent Ge(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Ge(2)-O(1) bond lengths are 1.87 Å. O(1) is bonded in a linear geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms.