Materials Data on Al3Ir by Materials Project

Abstract

IrAl3 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded to twelve equivalent Al atoms to form face-sharing IrAl12 cuboctahedra. All Ir–Al bond lengths are 2.66 Å. In the second Ir site, Ir is bonded to twelve equivalent Al atoms to form a mixture of distorted face and edge-sharing IrAl12 cuboctahedra. There are four shorter (2.66 Å) and eight longer (2.81 Å) Ir–Al bond lengths. Al is bonded in a 4-coordinate geometry to four Ir and seven equivalent Al atoms. There are a spread of Al–Al bond distances ranging from 2.55–2.87 Å.