Materials Data on LaPIr by Materials Project
LaIrP is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. The structure is three-dimensional. La is bonded to six equivalent Ir and six equivalent P atoms to form a mixture of edge and face-sharing LaP6Ir6 cuboctahedra. There are two shorter (3.12 Å) and four longer (3.21 Å) La–Ir bond lengths. There are four shorter (3.16 Å) and two longer (3.23 Å) La–P bond lengths. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 9-coordinate geometry to six equivalent La and three equivalent P atoms. All Ir–P bond lengths are 2.40 Å. In the second Ir site, Ir is bonded in a 9-coordinate geometry to six equivalent La and three equivalent P atoms. There are two shorter (3.12 Å) and four longer (3.21 Å) Ir–La bond lengths. All Ir–P bond lengths are 2.40 Å. P is bonded in a 9-coordinate geometry to six equivalent La and three equivalent Ir atoms.