Ba2Ir4Ge5 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a 20-coordinate geometry to two equivalent Ba(1), four equivalent Ir(1), four equivalent Ir(2), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(2) is bonded in a 5-coordinate geometry to four equivalent Ba(1), one Ge(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the second Ir site, Ir(1) is bonded in a 5-coordinate geometry to four equivalent Ba(1), one Ge(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1), two equivalent Ir(1), and two equivalent Ir(2) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to four equivalent Ba(1), two equivalent Ir(1), and two equivalent Ir(2) atoms. In the third Ge site, Ge(3) is bonded in a 4-coordinate geometry to four equivalent Ba(1), two equivalent Ir(1), and two equivalent Ir(2) atoms.
Ba2Ir4Ge5 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a 20-coordinate geometry to two equivalent Ba(1), four equivalent Ir(1), four equivalent Ir(2), two equivalent Ge(3), four equivalent Ge(1), and four equivalent Ge(2) atoms. Both Ba(1)-Ba(1) bond lengths are 3.61 Å. There are two shorter (3.70 Å) and two longer (3.92 Å) Ba(1)-Ir(1) bond lengths. There are two shorter (3.51 Å) and two longer (3.99 Å) Ba(1)-Ir(2) bond lengths. Both Ba(1)-Ge(3) bond lengths are 3.74 Å. There are two shorter (3.46 Å) and two longer (3.60 Å) Ba(1)-Ge(1) bond lengths. There are two shorter (3.40 Å) and two longer (3.68 Å) Ba(1)-Ge(2) bond lengths. There are two inequivalent Ir sites. In the first Ir site, Ir(2) is bonded in a 5-coordinate geometry to four equivalent Ba(1), one Ge(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. The Ir(2)-Ge(3) bond length is 2.63 Å. Both Ir(2)-Ge(1) bond lengths are 2.57 Å. There is one shorter (2.43 Å) and one longer (2.54 Å) Ir(2)-Ge(2) bond length. In the second Ir site, Ir(1) is bonded in a 5-coordinate geometry to four equivalent Ba(1), one Ge(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. The Ir(1)-Ge(3) bond length is 2.67 Å. There is one shorter (2.39 Å) and one longer (2.50 Å) Ir(1)-Ge(1) bond length. Both Ir(1)-Ge(2) bond lengths are 2.52 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1), two equivalent Ir(1), and two equivalent Ir(2) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to four equivalent Ba(1), two equivalent Ir(1), and two equivalent Ir(2) atoms. In the third Ge site, Ge(3) is bonded in a 4-coordinate geometry to four equivalent Ba(1), two equivalent Ir(1), and two equivalent Ir(2) atoms.