Materials Data on GePb(S2O7)3 by Materials Project

Abstract

PbGe(S2O7)3 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one PbGe(S2O7)3 sheet oriented in the (0, 0, 1) direction. Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.60–3.14 Å. Ge4+ is bonded to six O2- atoms to form GeO6 octahedra that share corners with six SO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.89–1.93 Å. There are six 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 49°. There are a spread of S–O bond distances ranging from 1.43–1.64 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 53°. There are a spread of S–O bond distances ranging from 1.43–1.63 Å. In the third 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 41°. There are a spread of S–O bond distances ranging from 1.42–1.68 Å. In the fourth 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 52°. There are a spread of S–O bond distances ranging from 1.42–1.67 Å. In the fifth 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 1.44–1.63 Å. In the sixth 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 1.42–1.67 Å. There are twenty-one inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ge4+ and one S6+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two S6+ atoms. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two S6+ atoms. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to two S6+ atoms. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one S6+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ge4+ and one S6+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one Pb2+ and one S6+ atom. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to one Ge4+ and one S6+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one S6+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one S6+ atom. In the thirteenth O2- site, O2- is bonded in a single-bond geometry to one Pb2+ and one S6+ atom. In the fourteenth O2- site, O2- is bonded in a single-bond geometry to one Pb2+ and one S6+ atom. In the fifteenth O2- site, O2- is bonded in a single-bond geometry to one S6+ atom. In the sixteenth O2- site, O2- is bonded in a single-bond geometry to one S6+ atom. In the seventeenth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one S6+ atom. In the eighteenth O2- site, O2- is bonded in a single-bond geometry to one S6+ atom. In the nineteenth O2- site, O2- is bonded in a single-bond geometry to one Pb2+ and one S6+ atom. In the twentieth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one S6+ atom. In the twenty-first O2- site, O2- is bonded in a single-bond geometry to one Pb2+ and one S6+ atom.