DyNiGe3 crystallizes in the orthorhombic Cmmm space group. Dy(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Ge(2), two equivalent Ge(3), and six equivalent Ge(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Dy(1), one Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Dy(1), one Ni(1), and two equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), one Ge(2), and four equivalent Ge(3) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), one Ge(3), and four equivalent Ge(2) atoms.
DyNiGe3 crystallizes in the orthorhombic Cmmm space group. Dy(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Ge(2), two equivalent Ge(3), and six equivalent Ge(1) atoms. All Dy(1)-Ni(1) bond lengths are 3.14 Å. Both Dy(1)-Ge(2) bond lengths are 3.13 Å. Both Dy(1)-Ge(3) bond lengths are 3.14 Å. There are four shorter (3.05 Å) and two longer (3.20 Å) Dy(1)-Ge(1) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Dy(1), one Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Ni(1)-Ge(1) bond length is 2.27 Å. Both Ni(1)-Ge(2) bond lengths are 2.33 Å. Both Ni(1)-Ge(3) bond lengths are 2.33 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Dy(1), one Ni(1), and two equivalent Ge(1) atoms. Both Ge(1)-Ge(1) bond lengths are 2.49 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), one Ge(2), and four equivalent Ge(3) atoms. The Ge(2)-Ge(2) bond length is 2.46 Å. All Ge(2)-Ge(3) bond lengths are 2.88 Å. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), one Ge(3), and four equivalent Ge(2) atoms. The Ge(3)-Ge(3) bond length is 2.47 Å.