Materials Data on SrGeO3 by Materials Project

Abstract

SrGeO3 crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.47–2.96 Å. Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There is two shorter (1.74 Å) and two longer (1.81 Å) Ge–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Sr2+ and two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three equivalent Sr2+ and one Ge4+ atom.