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DOE OSTI2020

Materials Data on Ge3Sb2O9 by Materials Project

Ge3Sb2O9 crystallizes in the hexagonal P6_3/m space group. The structure is two-dimensional and consists of two Ge3Sb2O9 sheets oriented in the (0, 0, 1) direction. Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.76–1.78 Å. Sb3+ is bonded in a distorted T-shaped geometry to three equivalent O2- atoms. All Sb–O bond lengths are 2.02 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ge4+ and one Sb3+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Ge4+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Ge3(SbO3)4 by Materials Project

Sb4Ge3O12 crystallizes in the cubic I-43d space group. The structure is three-dimensional. Ge4+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Ge–O bond lengths are 1.77 Å. Sb3+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. There are three shorter (2.04 Å) and three longer (2.74 Å) Sb–O bond lengths. O2- is bonded in a 2-coordinate geometry to one Ge4+ and two equivalent Sb3+ atoms.

36 MATERIALS SCIENCE↗