Materials Data on CaCu3(IrO3)4 by Materials Project

Abstract

CaCu3Ir4O12 crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Ca2+ is bonded to twelve equivalent O2- atoms to form CaO12 cuboctahedra that share faces with eight equivalent IrO6 octahedra. All Ca–O bond lengths are 2.63 Å. Ir+4.75+ is bonded to six equivalent O2- atoms to form IrO6 octahedra that share corners with six equivalent IrO6 octahedra and faces with two equivalent CaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 43°. All Ir–O bond lengths are 2.02 Å. Cu1+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Cu–O bond lengths are 1.94 Å. O2- is bonded in a 4-coordinate geometry to one Ca2+, two equivalent Ir+4.75+, and one Cu1+ atom.