Materials Data on Co2GeO4 by Materials Project

Co2GeO4 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Co2+ is bonded to six equivalent O2- atoms to form CoO6 octahedra that share corners with six equivalent GeO4 tetrahedra and edges with six equivalent CoO6 octahedra. All Co–O bond lengths are 2.10 Å. Ge4+ is bonded to four equivalent O2- atoms to form GeO4 tetrahedra that share corners with twelve equivalent CoO6 octahedra. The corner-sharing octahedral tilt angles are 54°. All Ge–O bond lengths are 1.80 Å. O2- is bonded in a rectangular see-saw-like geometry to three equivalent Co2+ and one Ge4+ atom.

Co₂GeO₄ 具有尖晶石结构（Spinel structured），结晶于立方晶系Fd-3m空间群。该结构为三维骨架结构。二价钴离子（Co²+）与六个等价的氧离子（O²-）配位，形成CoO₆八面体；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CoO₆八面体共享边。所有Co–O键长均为2.10 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CoO₆八面体共享顶点。共顶点八面体的倾斜角为54°。所有Ge–O键长均为1.80 Å。氧离子（O²-）以矩形跷板式几何构型与三个等价的二价钴离子（Co²+）及一个四价锗离子（Ge⁴+）配位。