Materials Data on Mg2GeO4 by Materials Project

Mg2GeO4 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with six equivalent GeO4 tetrahedra and edges with six equivalent MgO6 octahedra. All Mg–O bond lengths are 2.09 Å. Ge4+ is bonded to four equivalent O2- atoms to form GeO4 tetrahedra that share corners with twelve equivalent MgO6 octahedra. The corner-sharing octahedral tilt angles are 55°. All Ge–O bond lengths are 1.81 Å. O2- is bonded in a rectangular see-saw-like geometry to three equivalent Mg2+ and one Ge4+ atom.

二锗酸镁（Mg₂GeO₄）具有尖晶石（Spinel）结构，结晶于立方晶系Fd-3m空间群，为三维骨架结构。二价镁离子（Mg²+）与六个等价的氧离子（O²-）配位，形成MgO₆八面体；该八面体与六个等价的GeO₄四面体共享顶点，同时与六个等价的MgO₆八面体共享棱边，所有Mg–O键长均为2.09 Å。四价锗离子（Ge⁴+）与四个等价的氧离子（O²-）配位，形成GeO₄四面体；该四面体与十二个等价的MgO₆八面体共享顶点，共顶点八面体的倾斜角为55°，所有Ge–O键长均为1.81 Å。氧离子（O²-）以类矩形跷板式配位构型，与三个等价的Mg²+及一个Ge⁴+原子成键。