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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ge(Bi3O5)4 by Materials Project

Bi12GeO20 crystallizes in the cubic I23 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 1.80 Å. Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.11–2.66 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to three equivalent Bi3+ atoms. In the second O2- site, O2- is bonded to one Ge4+ and three equivalent Bi3+ atoms to form distorted corner-sharing OGeBi3 tetrahedra. In the third O2- site, O2- is bonded in a trigonal planar geometry to three equivalent Bi3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on GeBi2O5 by Materials Project

Bi2GeO5 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.75–1.83 Å. Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.20–2.57 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Bi3+ atoms to form a mixture of distorted edge and corner-sharing OBi4 tetrahedra. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one Ge4+ and two equivalent Bi3+ atoms. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Ge4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on GeBi2O5 by Materials Project

Bi2GeO5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ge4+ is bonded to five O2- atoms to form distorted corner-sharing GeO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.75–2.03 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Bi–O bond distances ranging from 2.27–2.76 Å. In the second Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Bi–O bond distances ranging from 2.19–2.88 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ge4+ and two Bi3+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Ge4+ and two equivalent Bi3+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to one Ge4+ and three Bi3+ atoms. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to one Ge4+ and three Bi3+ atoms. In the fifth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of distorted corner and edge-sharing OBi4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge3(BiO3)4 by Materials Project

Bi4Ge3O12 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 1.78 Å. Bi3+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. There are three shorter (2.22 Å) and three longer (2.61 Å) Bi–O bond lengths. O2- is bonded in a 3-coordinate geometry to one Ge4+ and two equivalent Bi3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge3Bi2O9 by Materials Project

Bi2Ge3O9 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.76–1.79 Å. Bi3+ is bonded in a 6-coordinate geometry to six equivalent O2- atoms. There are three shorter (2.19 Å) and three longer (2.73 Å) Bi–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Ge4+ and two equivalent Bi3+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Ge4+ atoms.

36 MATERIALS SCIENCE↗