Materials Data on Rb2Ge(S2O7)3 by Materials Project

Abstract

Rb2Ge(S2O7)3 crystallizes in the trigonal P-3 space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Rb–O bond distances ranging from 3.07–3.19 Å. In the second Rb1+ site, Rb1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Rb–O bond distances ranging from 2.92–3.32 Å. Ge4+ is bonded to six O2- atoms to form GeO6 octahedra that share corners with six SO4 tetrahedra. All Ge–O bond lengths are 1.91 Å. There are two inequivalent S6+ sites. In the first S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one GeO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 44°. There are a spread of S–O bond distances ranging from 1.43–1.67 Å. In the second S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one GeO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. There are a spread of S–O bond distances ranging from 1.43–1.66 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Rb1+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+ and one S6+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to two Rb1+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Rb1+ and two S6+ atoms. In the fifth O2- site, O2- is bonded in a single-bond geometry to one Rb1+ and one S6+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one S6+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ge4+ and one S6+ atom.