Ba3(IrGe4)4 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 18-coordinate geometry to two equivalent Ir(1), four equivalent Ge(3), four equivalent Ge(4), and eight equivalent Ge(1) atoms. In the second Ba site, Ba(2) is bonded in a 24-coordinate geometry to eight equivalent Ir(1), eight equivalent Ge(1), and eight equivalent Ge(2) atoms. Ir(1) is bonded in a 6-coordinate geometry to one Ba(1), two equivalent Ba(2), two equivalent Ge(2), and four equivalent Ge(1) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 2-coordinate geometry to one Ba(2), two equivalent Ba(1), two equivalent Ir(1), one Ge(3), and one Ge(4) atom. In the second Ge site, Ge(2) is bonded in a 2-coordinate geometry to two equivalent Ba(2) and two equivalent Ir(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Ge(4), and four equivalent Ge(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Ge(3), and four equivalent Ge(1) atoms.
Ba3(IrGe4)4 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 18-coordinate geometry to two equivalent Ir(1), four equivalent Ge(3), four equivalent Ge(4), and eight equivalent Ge(1) atoms. Both Ba(1)-Ir(1) bond lengths are 3.65 Å. All Ba(1)-Ge(3) bond lengths are 3.53 Å. All Ba(1)-Ge(4) bond lengths are 3.55 Å. All Ba(1)-Ge(1) bond lengths are 3.58 Å. In the second Ba site, Ba(2) is bonded in a 24-coordinate geometry to eight equivalent Ir(1), eight equivalent Ge(1), and eight equivalent Ge(2) atoms. All Ba(2)-Ir(1) bond lengths are 3.87 Å. All Ba(2)-Ge(1) bond lengths are 3.74 Å. All Ba(2)-Ge(2) bond lengths are 3.61 Å. Ir(1) is bonded in a 6-coordinate geometry to one Ba(1), two equivalent Ba(2), two equivalent Ge(2), and four equivalent Ge(1) atoms. Both Ir(1)-Ge(2) bond lengths are 2.51 Å. All Ir(1)-Ge(1) bond lengths are 2.51 Å. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 2-coordinate geometry to one Ba(2), two equivalent Ba(1), two equivalent Ir(1), one Ge(3), and one Ge(4) atom. The Ge(1)-Ge(3) bond length is 2.72 Å. The Ge(1)-Ge(4) bond length is 2.76 Å. In the second Ge site, Ge(2) is bonded in a 2-coordinate geometry to two equivalent Ba(2) and two equivalent Ir(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Ge(4), and four equivalent Ge(1) atoms. The Ge(3)-Ge(4) bond length is 2.57 Å. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Ge(3), and four equivalent Ge(1) atoms.