Materials Data on IrO3 by Materials Project

Abstract

IrO3 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. Ir is bonded to six O atoms to form corner-sharing IrO6 octahedra. The corner-sharing octahedra tilt angles range from 2–41°. There are a spread of Ir–O bond distances ranging from 1.88–1.97 Å. There are four inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to two equivalent Ir atoms. In the second O site, O is bonded in a bent 150 degrees geometry to two equivalent Ir atoms. In the third O site, O is bonded in a bent 150 degrees geometry to two equivalent Ir atoms. In the fourth O site, O is bonded in a linear geometry to two equivalent Ir atoms.