DOI: 10.17188/1268207
title: Materials Data on SrGeO3 by Materials Project

description: SrGeO3 is Esseneite-derived structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are six inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.50–2.68 Å. In the second Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.58–2.85 Å. In the third Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.48–2.82 Å. In the fourth Sr2+ site, Sr2+ is bonded to six O2- atoms to form distorted SrO6 octahedra that share corners with four GeO4 tetrahedra, an edgeedge with one SrO6 octahedra, and an edgeedge with one GeO4 tetrahedra. There are a spread of Sr–O bond distances ranging from 2.45–2.82 Å. In the fifth Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.47–2.70 Å. In the sixth Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.57–2.85 Å. There are six inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one SrO6 octahedra and corners with two GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Ge–O bond distances ranging from 1.74–1.82 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 1.75–1.82 Å. In the third Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one SrO6 octahedra, corners with two GeO4 tetrahedra, and an edgeedge with one SrO6 octahedra. The corner-sharing octahedral tilt angles are 73°. There are a spread of Ge–O bond distances ranging from 1.75–1.82 Å. In the fourth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one SrO6 octahedra and corners with two GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are a spread of Ge–O bond distances ranging from 1.75–1.82 Å. In the fifth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There is two shorter (1.73 Å) and two longer (1.85 Å) Ge–O bond length. In the sixth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one SrO6 octahedra and corners with two GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. There is two shorter (1.73 Å) and two longer (1.84 Å) Ge–O bond length. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the third O2- site, O2- is bonded to three Sr2+ and one Ge4+ atom to form a mixture of distorted edge and corner-sharing OSr3Ge trigonal pyramids. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+ and two Ge4+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sr2+ and two Ge4+ atoms. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the tenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the thirteenth O2- site, O2- is bonded to three Sr2+ and one Ge4+ atom to form a mixture of distorted edge and corner-sharing OSr3Ge trigonal pyramids. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+ and two Ge4+ atoms. In the fifteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+ and two Ge4+ atoms. In the seventeenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sr2+ and one Ge4+ atom.