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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Cs4GeO4 by Materials Project

Cs4GeO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cs–O bond distances ranging from 3.03–3.59 Å. In the second Cs1+ site, Cs1+ is bonded to four O2- atoms to form distorted CsO4 tetrahedra that share corners with four equivalent GeO4 tetrahedra and edges with two equivalent CsO4 tetrahedra. There are a spread of Cs–O bond distances ranging from 2.95–3.17 Å. In the third Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to four O2- atoms. There are a spread of Cs–O bond distances ranging from 2.93–3.04 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 2.92–3.57 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four equivalent CsO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.80–1.83 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to four Cs1+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Ge4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs4GeO4 by Materials Project

Cs4GeO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cs–O bond distances ranging from 2.95–3.59 Å. In the second Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cs–O bond distances ranging from 2.97–3.07 Å. In the third Cs1+ site, Cs1+ is bonded to four O2- atoms to form distorted CsO4 tetrahedra that share corners with four equivalent GeO4 tetrahedra and an edgeedge with one CsO4 tetrahedra. There are two shorter (2.92 Å) and two longer (3.03 Å) Cs–O bond lengths. In the fourth Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 3.01–3.21 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four equivalent CsO4 tetrahedra. There is three shorter (1.81 Å) and one longer (1.82 Å) Ge–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to five Cs1+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to five Cs1+ and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to four Cs1+ and one Ge4+ atom.

36 MATERIALS SCIENCE↗