Materials Data on Mg3Co2(GeO4)3 by Materials Project

Abstract

Mg3Co2(GeO4)3 crystallizes in the cubic Ia-3d space group. The structure is three-dimensional. Mg2+ is bonded in a distorted body-centered cubic geometry to eight equivalent O2- atoms. There are four shorter (2.23 Å) and four longer (2.37 Å) Mg–O bond lengths. Co3+ is bonded to six equivalent O2- atoms to form CoO6 octahedra that share corners with six equivalent GeO4 tetrahedra. All Co–O bond lengths are 1.93 Å. Ge4+ is bonded to four equivalent O2- atoms to form GeO4 tetrahedra that share corners with four equivalent CoO6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Ge–O bond lengths are 1.78 Å. O2- is bonded in a 4-coordinate geometry to two equivalent Mg2+, one Co3+, and one Ge4+ atom.