Materials Data on Rb2Ge2O5 by Materials Project
Rb2Ge2O5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Rb–O bond distances ranging from 2.77–3.11 Å. In the second Rb1+ site, Rb1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Rb–O bond distances ranging from 2.75–3.43 Å. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.70–1.80 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.71–1.81 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two Ge4+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Rb1+ and two Ge4+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three Rb1+ and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to three Rb1+ and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Rb1+ and two equivalent Ge4+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Rb1+ and two equivalent Ge4+ atoms.