Ce2Ir3Sb4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 17-coordinate geometry to two equivalent Ir(3), three equivalent Ir(1), three equivalent Ir(2), one Sb(2), two equivalent Sb(1), three equivalent Sb(3), and three equivalent Sb(4) atoms. In the second Ce site, Ce(2) is bonded in a 15-coordinate geometry to one Ir(1), two equivalent Ir(2), three equivalent Ir(3), one Sb(4), two equivalent Sb(3), three equivalent Sb(1), and three equivalent Sb(2) atoms. There are three inequivalent Ir sites. In the first Ir site, Ir(3) is bonded in a 7-coordinate geometry to two equivalent Ce(1), three equivalent Ce(2), one Sb(1), one Sb(3), one Sb(4), and two equivalent Sb(2) atoms. In the second Ir site, Ir(1) is bonded in a 10-coordinate geometry to one Ce(2), three equivalent Ce(1), two equivalent Ir(1), one Sb(1), and three equivalent Sb(3) atoms. In the third Ir site, Ir(2) is bonded in a 5-coordinate geometry to two equivalent Ce(2), three equivalent Ce(1), one Sb(1), one Sb(2), and three equivalent Sb(4) atoms. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 7-coordinate geometry to two equivalent Ce(1), three equivalent Ce(2), one Ir(1), one Ir(2), and one Ir(3) atom. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one Ce(1), three equivalent Ce(2), one Ir(2), and two equivalent Ir(3) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent Ce(2), three equivalent Ce(1), one Ir(3), and three equivalent Ir(1) atoms. In the fourth Sb site, Sb(4) is bonded in a 8-coordinate geometry to one Ce(2), three equivalent Ce(1), one Ir(3), and three equivalent Ir(2) atoms.
Ce2Ir3Sb4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 17-coordinate geometry to two equivalent Ir(3), three equivalent Ir(1), three equivalent Ir(2), one Sb(2), two equivalent Sb(1), three equivalent Sb(3), and three equivalent Sb(4) atoms. Both Ce(1)-Ir(3) bond lengths are 3.71 Å. There is one shorter (3.15 Å) and two longer (3.42 Å) Ce(1)-Ir(1) bond lengths. There are two shorter (3.54 Å) and one longer (3.70 Å) Ce(1)-Ir(2) bond length. The Ce(1)-Sb(2) bond length is 3.71 Å. Both Ce(1)-Sb(1) bond lengths are 3.42 Å. There are two shorter (3.45 Å) and one longer (3.83 Å) Ce(1)-Sb(3) bond length. There are two shorter (3.34 Å) and one longer (3.59 Å) Ce(1)-Sb(4) bond length. In the second Ce site, Ce(2) is bonded in a 15-coordinate geometry to one Ir(1), two equivalent Ir(2), three equivalent Ir(3), one Sb(4), two equivalent Sb(3), three equivalent Sb(1), and three equivalent Sb(2) atoms. The Ce(2)-Ir(1) bond length is 3.43 Å. Both Ce(2)-Ir(2) bond lengths are 3.45 Å. There are two shorter (3.25 Å) and one longer (3.61 Å) Ce(2)-Ir(3) bond length. The Ce(2)-Sb(4) bond length is 3.35 Å. Both Ce(2)-Sb(3) bond lengths are 3.29 Å. There are two shorter (3.46 Å) and one longer (3.82 Å) Ce(2)-Sb(1) bond length. There are two shorter (3.23 Å) and one longer (3.34 Å) Ce(2)-Sb(2) bond length. There are three inequivalent Ir sites. In the first Ir site, Ir(3) is bonded in a 7-coordinate geometry to two equivalent Ce(1), three equivalent Ce(2), one Sb(1), one Sb(3), one Sb(4), and two equivalent Sb(2) atoms. The Ir(3)-Sb(1) bond length is 2.71 Å. The Ir(3)-Sb(3) bond length is 2.64 Å. The Ir(3)-Sb(4) bond length is 2.66 Å. Both Ir(3)-Sb(2) bond lengths are 2.64 Å. In the second Ir site, Ir(1) is bonded in a 10-coordinate geometry to one Ce(2), three equivalent Ce(1), two equivalent Ir(1), one Sb(1), and three equivalent Sb(3) atoms. Both Ir(1)-Ir(1) bond lengths are 3.01 Å. The Ir(1)-Sb(1) bond length is 2.62 Å. There are two shorter (2.64 Å) and one longer (2.67 Å) Ir(1)-Sb(3) bond length. In the third Ir site, Ir(2) is bonded in a 5-coordinate geometry to two equivalent Ce(2), three equivalent Ce(1), one Sb(1), one Sb(2), and three equivalent Sb(4) atoms. The Ir(2)-Sb(1) bond length is 2.57 Å. The Ir(2)-Sb(2) bond length is 2.67 Å. There are two shorter (2.61 Å) and one longer (2.62 Å) Ir(2)-Sb(4) bond length. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 7-coordinate geometry to two equivalent Ce(1), three equivalent Ce(2), one Ir(1), one Ir(2), and one Ir(3) atom. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one Ce(1), three equivalent Ce(2), one Ir(2), and two equivalent Ir(3) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent Ce(2), three equivalent Ce(1), one Ir(3), and three equivalent Ir(1) atoms. In the fourth Sb site, Sb(4) is bonded in a 8-coordinate geometry to one Ce(2), three equivalent Ce(1), one Ir(3), and three equivalent Ir(2) atoms.