BaIr2In9 crystallizes in the hexagonal P6/mmm space group. Ba(1) is bonded to twelve equivalent In(1) atoms to form face-sharing BaIn12 cuboctahedra. Ir(1) is bonded in a 9-coordinate geometry to three equivalent In(2) and six equivalent In(1) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 2-coordinate geometry to two equivalent Ba(1) and two equivalent Ir(1) atoms. In the second In site, In(2) is bonded in a linear geometry to two equivalent Ir(1) atoms.
BaIr2In9 crystallizes in the hexagonal P6/mmm space group. Ba(1) is bonded to twelve equivalent In(1) atoms to form face-sharing BaIn12 cuboctahedra. All Ba(1)-In(1) bond lengths are 3.87 Å. Ir(1) is bonded in a 9-coordinate geometry to three equivalent In(2) and six equivalent In(1) atoms. All Ir(1)-In(2) bond lengths are 2.58 Å. All Ir(1)-In(1) bond lengths are 2.91 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 2-coordinate geometry to two equivalent Ba(1) and two equivalent Ir(1) atoms. In the second In site, In(2) is bonded in a linear geometry to two equivalent Ir(1) atoms.