Ba2Ir3O9 crystallizes in the cubic I23 space group. Ba(1) is bonded in a 9-coordinate geometry to three equivalent O(1) and six equivalent O(2) atoms. Ir(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form a mixture of corner and edge-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Ir(1) atoms. In the second O site, O(1) is bonded in a distorted L-shaped geometry to two equivalent Ba(1) and two equivalent Ir(1) atoms.
Ba2Ir3O9 crystallizes in the cubic I23 space group. Ba(1) is bonded in a 9-coordinate geometry to three equivalent O(1) and six equivalent O(2) atoms. All Ba(1)-O(1) bond lengths are 3.00 Å. There are three shorter (2.63 Å) and three longer (2.83 Å) Ba(1)-O(2) bond lengths. Ir(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form a mixture of corner and edge-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 49°. Both Ir(1)-O(1) bond lengths are 2.00 Å. There are two shorter (1.96 Å) and two longer (1.99 Å) Ir(1)-O(2) bond lengths. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Ir(1) atoms. In the second O site, O(1) is bonded in a distorted L-shaped geometry to two equivalent Ba(1) and two equivalent Ir(1) atoms.