Mg2GeO4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to six equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with six equivalent Mg(1)O6 octahedra. Ge(1) is bonded to four equivalent O(1) atoms to form GeO4 tetrahedra that share corners with twelve equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. O(1) is bonded in a rectangular see-saw-like geometry to three equivalent Mg(1) and one Ge(1) atom.
Mg2GeO4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to six equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with six equivalent Mg(1)O6 octahedra. All Mg(1)-O(1) bond lengths are 2.06 Å. Ge(1) is bonded to four equivalent O(1) atoms to form GeO4 tetrahedra that share corners with twelve equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. All Ge(1)-O(1) bond lengths are 1.79 Å. O(1) is bonded in a rectangular see-saw-like geometry to three equivalent Mg(1) and one Ge(1) atom.