Mg2Ir5B2Ge crystallizes in the tetragonal P4/mbm space group. Mg(1) is bonded in a 15-coordinate geometry to two equivalent Mg(1), two equivalent Ir(1), eight equivalent Ir(2), and three equivalent B(1) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mg(1) and four equivalent B(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to four equivalent Mg(1), two equivalent B(1), and two equivalent Ge(1) atoms. B(1) is bonded in a 9-coordinate geometry to three equivalent Mg(1), two equivalent Ir(1), and four equivalent Ir(2) atoms. Ge(1) is bonded in a body-centered cubic geometry to eight equivalent Ir(2) atoms.
Mg2Ir5B2Ge crystallizes in the tetragonal P4/mbm space group. Mg(1) is bonded in a 15-coordinate geometry to two equivalent Mg(1), two equivalent Ir(1), eight equivalent Ir(2), and three equivalent B(1) atoms. Both Mg(1)-Mg(1) bond lengths are 2.92 Å. Both Mg(1)-Ir(1) bond lengths are 2.75 Å. There are four shorter (2.81 Å) and four longer (2.95 Å) Mg(1)-Ir(2) bond lengths. There is one shorter (2.66 Å) and two longer (2.86 Å) Mg(1)-B(1) bond lengths. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mg(1) and four equivalent B(1) atoms. All Ir(1)-B(1) bond lengths are 2.22 Å. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to four equivalent Mg(1), two equivalent B(1), and two equivalent Ge(1) atoms. Both Ir(2)-B(1) bond lengths are 2.17 Å. Both Ir(2)-Ge(1) bond lengths are 2.57 Å. B(1) is bonded in a 9-coordinate geometry to three equivalent Mg(1), two equivalent Ir(1), and four equivalent Ir(2) atoms. Ge(1) is bonded in a body-centered cubic geometry to eight equivalent Ir(2) atoms.