Materials Data on Ba2(IrO3)3 by Materials Project

Abstract

Ba2Ir3O9 crystallizes in the cubic I23 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 2.65–3.04 Å. Ir+4.67+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Ir–O bond distances ranging from 1.98–2.01 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ba2+ and two equivalent Ir+4.67+ atoms. In the second O2- site, O2- is bonded in a distorted L-shaped geometry to two equivalent Ba2+ and two equivalent Ir+4.67+ atoms.