CeIrIn crystallizes in the hexagonal P-62m space group. Ce(1) is bonded in a 11-coordinate geometry to one Ir(1), four equivalent Ir(2), and six equivalent In(1) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 9-coordinate geometry to three equivalent Ce(1) and six equivalent In(1) atoms. In the second Ir site, Ir(2) is bonded in a 9-coordinate geometry to six equivalent Ce(1) and three equivalent In(1) atoms. In(1) is bonded in a 10-coordinate geometry to six equivalent Ce(1), two equivalent Ir(1), and two equivalent Ir(2) atoms.
CeIrIn crystallizes in the hexagonal P-62m space group. Ce(1) is bonded in a 11-coordinate geometry to one Ir(1), four equivalent Ir(2), and six equivalent In(1) atoms. The Ce(1)-Ir(1) bond length is 3.11 Å. All Ce(1)-Ir(2) bond lengths are 3.03 Å. There are two shorter (3.23 Å) and four longer (3.37 Å) Ce(1)-In(1) bond lengths. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 9-coordinate geometry to three equivalent Ce(1) and six equivalent In(1) atoms. All Ir(1)-In(1) bond lengths are 2.75 Å. In the second Ir site, Ir(2) is bonded in a 9-coordinate geometry to six equivalent Ce(1) and three equivalent In(1) atoms. All Ir(2)-In(1) bond lengths are 2.88 Å. In(1) is bonded in a 10-coordinate geometry to six equivalent Ce(1), two equivalent Ir(1), and two equivalent Ir(2) atoms.