DOI: 10.17188/1746173
title: Materials Data on BaSi(S2O7)3 by Materials Project

description: BaSi(S2O7)3 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.83–3.15 Å. Si4+ is bonded to six O2- atoms to form SiO6 octahedra that share corners with six SO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.78–1.80 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 SiO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. There are a spread of S–O bond distances ranging from 1.43–1.65 Å. In the second S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one SiO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. There are a spread of S–O bond distances ranging from 1.43–1.64 Å. In the third S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one SiO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. There are a spread of S–O bond distances ranging from 1.43–1.63 Å. In the fourth S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one SiO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. There are a spread of S–O bond distances ranging from 1.43–1.65 Å. In the fifth S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one SiO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. There are a spread of S–O bond distances ranging from 1.42–1.68 Å. In the sixth S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one SiO6 octahedra and a cornercorner with one SO4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are a spread of S–O bond distances ranging from 1.42–1.66 Å. There are twenty-one inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Si4+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Ba2+ and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Si4+ and one S6+ atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one Ba2+ and one S6+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Si4+ and one S6+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one Ba2+ and one S6+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Si4+ and one S6+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the fourteenth O2- site, O2- is bonded in a single-bond geometry to one S6+ atom. In the fifteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two S6+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one S6+ atom. In the seventeenth O2- site, O2- is bonded in a bent 120 degrees geometry to two S6+ atoms. 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 distorted bent 120 degrees geometry to one Si4+ and one S6+ atom. In the twentieth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Si4+ and one S6+ atom. In the twenty-first O2- site, O2- is bonded in a bent 120 degrees geometry to two S6+ atoms.