Eu(IrIn4)2 crystallizes in the orthorhombic Pbam space group. Eu(1) is bonded in a 13-coordinate geometry to one In(9), two equivalent In(1), two equivalent In(2), two equivalent In(3), two equivalent In(4), two equivalent In(5), and two equivalent In(6) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 9-coordinate geometry to one In(6), two equivalent In(2), two equivalent In(5), two equivalent In(7), and two equivalent In(8) atoms. In the second Ir site, Ir(2) is bonded in a 9-coordinate geometry to one In(6), one In(7), one In(9), two equivalent In(1), two equivalent In(3), and two equivalent In(4) atoms. There are nine inequivalent In sites. In the first In site, In(8) is bonded in a 4-coordinate geometry to four equivalent Ir(1) atoms. In the second In site, In(9) is bonded in a linear geometry to two equivalent Eu(1), two equivalent Ir(2), and four equivalent In(1) atoms. In the third In site, In(1) is bonded in a 12-coordinate geometry to two equivalent Eu(1), two equivalent Ir(2), one In(3), one In(5), two equivalent In(4), two equivalent In(6), and two equivalent In(9) atoms. In the fourth In site, In(2) is bonded in a 5-coordinate geometry to two equivalent Eu(1), two equivalent Ir(1), and one In(4) atom. In the fifth In site, In(3) is bonded in a 2-coordinate geometry to two equivalent Eu(1), two equivalent Ir(2), and one In(1) atom. In the sixth In site, In(4) is bonded in a 2-coordinate geometry to two equivalent Eu(1), two equivalent Ir(2), one In(2), and two equivalent In(1) atoms. In the seventh In site, In(5) is bonded in a 2-coordinate geometry to two equivalent Eu(1), two equivalent Ir(1), and one In(1) atom. In the eighth In site, In(6) is bonded in a distorted linear geometry to two equivalent Eu(1), one Ir(1), one Ir(2), and two equivalent In(1) atoms. In the ninth In site, In(7) is bonded in a 3-coordinate geometry to one Ir(2) and two equivalent Ir(1) atoms.
Eu(IrIn4)2 crystallizes in the orthorhombic Pbam space group. Eu(1) is bonded in a 13-coordinate geometry to one In(9), two equivalent In(1), two equivalent In(2), two equivalent In(3), two equivalent In(4), two equivalent In(5), and two equivalent In(6) atoms. The Eu(1)-In(9) bond length is 3.75 Å. Both Eu(1)-In(1) bond lengths are 3.47 Å. Both Eu(1)-In(2) bond lengths are 3.52 Å. Both Eu(1)-In(3) bond lengths are 3.58 Å. Both Eu(1)-In(4) bond lengths are 3.61 Å. Both Eu(1)-In(5) bond lengths are 3.53 Å. There is one shorter (3.65 Å) and one longer (3.88 Å) Eu(1)-In(6) bond length. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 9-coordinate geometry to one In(6), two equivalent In(2), two equivalent In(5), two equivalent In(7), and two equivalent In(8) atoms. The Ir(1)-In(6) bond length is 2.69 Å. Both Ir(1)-In(2) bond lengths are 2.97 Å. Both Ir(1)-In(5) bond lengths are 2.94 Å. There is one shorter (2.91 Å) and one longer (2.93 Å) Ir(1)-In(7) bond length. Both Ir(1)-In(8) bond lengths are 2.79 Å. In the second Ir site, Ir(2) is bonded in a 9-coordinate geometry to one In(6), one In(7), one In(9), two equivalent In(1), two equivalent In(3), and two equivalent In(4) atoms. The Ir(2)-In(6) bond length is 2.72 Å. The Ir(2)-In(7) bond length is 2.81 Å. The Ir(2)-In(9) bond length is 2.73 Å. Both Ir(2)-In(1) bond lengths are 3.02 Å. Both Ir(2)-In(3) bond lengths are 2.89 Å. Both Ir(2)-In(4) bond lengths are 2.88 Å. There are nine inequivalent In sites. In the first In site, In(8) is bonded in a 4-coordinate geometry to four equivalent Ir(1) atoms. In the second In site, In(9) is bonded in a linear geometry to two equivalent Eu(1), two equivalent Ir(2), and four equivalent In(1) atoms. All In(9)-In(1) bond lengths are 3.17 Å. In the third In site, In(1) is bonded in a 12-coordinate geometry to two equivalent Eu(1), two equivalent Ir(2), one In(3), one In(5), two equivalent In(4), two equivalent In(6), and two equivalent In(9) atoms. The In(1)-In(3) bond length is 3.24 Å. The In(1)-In(5) bond length is 3.22 Å. There is one shorter (3.22 Å) and one longer (3.38 Å) In(1)-In(4) bond length. Both In(1)-In(6) bond lengths are 3.22 Å. In the fourth In site, In(2) is bonded in a 5-coordinate geometry to two equivalent Eu(1), two equivalent Ir(1), and one In(4) atom. The In(2)-In(4) bond length is 2.99 Å. In the fifth In site, In(3) is bonded in a 2-coordinate geometry to two equivalent Eu(1), two equivalent Ir(2), and one In(1) atom. In the sixth In site, In(4) is bonded in a 2-coordinate geometry to two equivalent Eu(1), two equivalent Ir(2), one In(2), and two equivalent In(1) atoms. In the seventh In site, In(5) is bonded in a 2-coordinate geometry to two equivalent Eu(1), two equivalent Ir(1), and one In(1) atom. In the eighth In site, In(6) is bonded in a distorted linear geometry to two equivalent Eu(1), one Ir(1), one Ir(2), and two equivalent In(1) atoms. In the ninth In site, In(7) is bonded in a 3-coordinate geometry to one Ir(2) and two equivalent Ir(1) atoms.