DyB4(IrRh)2 crystallizes in the tetragonal P4_2mc space group. Dy(1) is bonded in a 24-coordinate geometry to six equivalent Ir(1), six equivalent Rh(1), six equivalent B(1), and six equivalent B(2) atoms. Ir(1) is bonded in a 5-coordinate geometry to three equivalent Dy(1), two equivalent B(2), and three equivalent B(1) atoms. Rh(1) is bonded in a 5-coordinate geometry to three equivalent Dy(1), two equivalent B(1), and three equivalent B(2) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent Dy(1), three equivalent Ir(1), two equivalent Rh(1), and one B(1) atom. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Dy(1), two equivalent Ir(1), three equivalent Rh(1), and one B(2) atom.
DyB4(IrRh)2 crystallizes in the tetragonal P4_2mc space group. Dy(1) is bonded in a 24-coordinate geometry to six equivalent Ir(1), six equivalent Rh(1), six equivalent B(1), and six equivalent B(2) atoms. There are two shorter (2.99 Å) and four longer (3.20 Å) Dy(1)-Ir(1) bond lengths. There are two shorter (2.97 Å) and four longer (3.20 Å) Dy(1)-Rh(1) bond lengths. There are four shorter (3.07 Å) and two longer (3.12 Å) Dy(1)-B(1) bond lengths. There are four shorter (3.05 Å) and two longer (3.16 Å) Dy(1)-B(2) bond lengths. Ir(1) is bonded in a 5-coordinate geometry to three equivalent Dy(1), two equivalent B(2), and three equivalent B(1) atoms. Both Ir(1)-B(2) bond lengths are 2.22 Å. There are two shorter (2.23 Å) and one longer (2.27 Å) Ir(1)-B(1) bond length. Rh(1) is bonded in a 5-coordinate geometry to three equivalent Dy(1), two equivalent B(1), and three equivalent B(2) atoms. Both Rh(1)-B(1) bond lengths are 2.22 Å. There are two shorter (2.23 Å) and one longer (2.25 Å) Rh(1)-B(2) bond length. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent Dy(1), three equivalent Ir(1), two equivalent Rh(1), and one B(1) atom. The B(1)-B(1) bond length is 1.84 Å. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Dy(1), two equivalent Ir(1), three equivalent Rh(1), and one B(2) atom. The B(2)-B(2) bond length is 1.83 Å.