DyNiGe2 crystallizes in the orthorhombic Immm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to six equivalent Ni(1), two equivalent Ge(3), and six equivalent Ge(1) atoms. In the second Dy site, Dy(2) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Ge(1), four equivalent Ge(2), and four equivalent Ge(3) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Dy(2), three equivalent Dy(1), one Ge(2), one Ge(3), and three equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Dy(2), three equivalent Dy(1), three equivalent Ni(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to four equivalent Dy(2), two equivalent Ni(1), and one Ge(2) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(2), two equivalent Ni(1), and one Ge(3) atom.
DyNiGe2 crystallizes in the orthorhombic Immm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to six equivalent Ni(1), two equivalent Ge(3), and six equivalent Ge(1) atoms. There are four shorter (3.10 Å) and two longer (3.14 Å) Dy(1)-Ni(1) bond lengths. Both Dy(1)-Ge(3) bond lengths are 2.90 Å. There are two shorter (2.89 Å) and four longer (2.93 Å) Dy(1)-Ge(1) bond lengths. In the second Dy site, Dy(2) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Ge(1), four equivalent Ge(2), and four equivalent Ge(3) atoms. All Dy(2)-Ni(1) bond lengths are 3.14 Å. Both Dy(2)-Ge(1) bond lengths are 3.21 Å. All Dy(2)-Ge(2) bond lengths are 3.28 Å. All Dy(2)-Ge(3) bond lengths are 3.15 Å. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Dy(2), three equivalent Dy(1), one Ge(2), one Ge(3), and three equivalent Ge(1) atoms. The Ni(1)-Ge(2) bond length is 2.37 Å. The Ni(1)-Ge(3) bond length is 2.40 Å. There are two shorter (2.34 Å) and one longer (2.59 Å) Ni(1)-Ge(1) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Dy(2), three equivalent Dy(1), three equivalent Ni(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.67 Å. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to four equivalent Dy(2), two equivalent Ni(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.52 Å. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), four equivalent Dy(2), two equivalent Ni(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.44 Å.