In5Ir9B4 crystallizes in the hexagonal P-62m space group. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 6-coordinate geometry to two equivalent In(2), two equivalent In(3), and two equivalent B(1) atoms. In the second Ir site, Ir(2) is bonded to two equivalent In(1) and four equivalent B(1) atoms to form a mixture of distorted corner and face-sharing IrIn2B4 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. There are three inequivalent In sites. In the first In site, In(1) is bonded in a hexagonal planar geometry to six equivalent Ir(2) atoms. In the second In site, In(2) is bonded in a 6-coordinate geometry to six equivalent Ir(1) atoms. In the third In site, In(3) is bonded in a 6-coordinate geometry to six equivalent Ir(1) atoms. B(1) is bonded to three equivalent Ir(1) and three equivalent Ir(2) atoms to form a mixture of distorted corner, face, and edge-sharing BIr6 pentagonal pyramids.
In5Ir9B4 crystallizes in the hexagonal P-62m space group. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 6-coordinate geometry to two equivalent In(2), two equivalent In(3), and two equivalent B(1) atoms. Both Ir(1)-In(2) bond lengths are 2.83 Å. There is one shorter (2.76 Å) and one longer (3.02 Å) Ir(1)-In(3) bond length. Both Ir(1)-B(1) bond lengths are 2.10 Å. In the second Ir site, Ir(2) is bonded to two equivalent In(1) and four equivalent B(1) atoms to form a mixture of distorted corner and face-sharing IrIn2B4 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. There is one shorter (2.68 Å) and one longer (2.93 Å) Ir(2)-In(1) bond length. All Ir(2)-B(1) bond lengths are 2.22 Å. There are three inequivalent In sites. In the first In site, In(1) is bonded in a hexagonal planar geometry to six equivalent Ir(2) atoms. In the second In site, In(2) is bonded in a 6-coordinate geometry to six equivalent Ir(1) atoms. In the third In site, In(3) is bonded in a 6-coordinate geometry to six equivalent Ir(1) atoms. B(1) is bonded to three equivalent Ir(1) and three equivalent Ir(2) atoms to form a mixture of distorted corner, face, and edge-sharing BIr6 pentagonal pyramids.