Materials Data on BaMnO3 by Materials Project

Abstract

BaMnO3 crystallizes in the hexagonal P6_3cm space group. The structure is three-dimensional. Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.79–2.95 Å. There are two inequivalent Mn4+ sites. In the first Mn4+ site, Mn4+ is bonded to six equivalent O2- atoms to form face-sharing MnO6 octahedra. There is three shorter (1.93 Å) and three longer (1.95 Å) Mn–O bond length. In the second Mn4+ site, Mn4+ is bonded to six equivalent O2- atoms to form face-sharing MnO6 octahedra. There is three shorter (1.93 Å) and three longer (1.95 Å) Mn–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to three equivalent Ba2+ and two equivalent Mn4+ atoms. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Ba2+ and two equivalent Mn4+ atoms.