Materials Data on Ce(SiIr)2 by Materials Project

Abstract

CeIr2Si2 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Ce is bonded in a 8-coordinate geometry to eight Ir and eight equivalent Si atoms. There are four shorter (3.24 Å) and four longer (3.26 Å) Ce–Ir bond lengths. There are four shorter (3.27 Å) and four longer (3.31 Å) Ce–Si bond lengths. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 9-coordinate geometry to four equivalent Ce, one Ir, and four equivalent Si atoms. The Ir–Ir bond length is 2.65 Å. All Ir–Si bond lengths are 2.42 Å. In the second Ir site, Ir is bonded in a 9-coordinate geometry to four equivalent Ce, one Ir, and four equivalent Si atoms. All Ir–Si bond lengths are 2.42 Å. Si is bonded in a 4-coordinate geometry to four equivalent Ce and four Ir atoms.