Dy2CuGe6 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(5), and four equivalent Ge(3) atoms. In the second Dy site, Dy(2) is bonded in a 14-coordinate geometry to four equivalent Cu(1), two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(6), and four equivalent Ge(4) atoms. Cu(1) is bonded in a 9-coordinate geometry to four equivalent Dy(2), one Ge(4), two equivalent Ge(1), and two equivalent Ge(6) atoms. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), two equivalent Cu(1), one Ge(2), and four equivalent Ge(6) atoms. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to two equivalent Dy(1), one Ge(1), and four equivalent Ge(5) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), and two equivalent Ge(4) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(2), one Cu(1), and two equivalent Ge(3) atoms. In the fifth Ge site, Ge(5) is bonded in a 7-coordinate geometry to two equivalent Dy(1), one Ge(6), and four equivalent Ge(2) atoms. In the sixth Ge site, Ge(6) is bonded in a 9-coordinate geometry to two equivalent Dy(2), two equivalent Cu(1), one Ge(5), and four equivalent Ge(1) atoms.
Dy2CuGe6 crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(5), and four equivalent Ge(3) atoms. Both Dy(1)-Ge(2) bond lengths are 2.99 Å. Both Dy(1)-Ge(4) bond lengths are 3.13 Å. Both Dy(1)-Ge(5) bond lengths are 2.99 Å. All Dy(1)-Ge(3) bond lengths are 2.99 Å. In the second Dy site, Dy(2) is bonded in a 14-coordinate geometry to four equivalent Cu(1), two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(6), and four equivalent Ge(4) atoms. All Dy(2)-Cu(1) bond lengths are 3.10 Å. Both Dy(2)-Ge(1) bond lengths are 3.20 Å. Both Dy(2)-Ge(3) bond lengths are 3.38 Å. Both Dy(2)-Ge(6) bond lengths are 3.21 Å. All Dy(2)-Ge(4) bond lengths are 3.10 Å. Cu(1) is bonded in a 9-coordinate geometry to four equivalent Dy(2), one Ge(4), two equivalent Ge(1), and two equivalent Ge(6) atoms. The Cu(1)-Ge(4) bond length is 2.32 Å. Both Cu(1)-Ge(1) bond lengths are 2.42 Å. Both Cu(1)-Ge(6) bond lengths are 2.41 Å. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), two equivalent Cu(1), one Ge(2), and four equivalent Ge(6) atoms. The Ge(1)-Ge(2) bond length is 2.49 Å. All Ge(1)-Ge(6) bond lengths are 2.87 Å. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to two equivalent Dy(1), one Ge(1), and four equivalent Ge(5) atoms. All Ge(2)-Ge(5) bond lengths are 2.88 Å. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), and two equivalent Ge(4) atoms. Both Ge(3)-Ge(4) bond lengths are 2.55 Å. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(2), one Cu(1), and two equivalent Ge(3) atoms. In the fifth Ge site, Ge(5) is bonded in a 7-coordinate geometry to two equivalent Dy(1), one Ge(6), and four equivalent Ge(2) atoms. The Ge(5)-Ge(6) bond length is 2.51 Å. In the sixth Ge site, Ge(6) is bonded in a 9-coordinate geometry to two equivalent Dy(2), two equivalent Cu(1), one Ge(5), and four equivalent Ge(1) atoms.