AlDy2Ge3 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 11-coordinate geometry to two equivalent Al(1), one Ge(1), four equivalent Ge(2), and four equivalent Ge(3) atoms. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), and three equivalent Ge(1) atoms. Al(1) is bonded to two equivalent Dy(1), one Ge(3), and three equivalent Ge(1) atoms to form distorted AlDy2Ge4 tetrahedra that share corners with two equivalent Ge(1)Dy4Al3 pentagonal bipyramids and edges with four equivalent Al(1)Dy2Ge4 tetrahedra. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one Dy(1), three equivalent Dy(2), and three equivalent Al(1) atoms to form distorted GeDy4Al3 pentagonal bipyramids that share corners with two equivalent Al(1)Dy2Ge4 tetrahedra and edges with six equivalent Ge(1)Dy4Al3 pentagonal bipyramids. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), and two equivalent Ge(3) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), one Al(1), and two equivalent Ge(2) atoms.
AlDy2Ge3 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 11-coordinate geometry to two equivalent Al(1), one Ge(1), four equivalent Ge(2), and four equivalent Ge(3) atoms. Both Dy(1)-Al(1) bond lengths are 3.33 Å. The Dy(1)-Ge(1) bond length is 3.04 Å. There are two shorter (2.98 Å) and two longer (3.34 Å) Dy(1)-Ge(2) bond lengths. There are two shorter (3.01 Å) and two longer (3.13 Å) Dy(1)-Ge(3) bond lengths. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), and three equivalent Ge(1) atoms. Both Dy(2)-Ge(2) bond lengths are 2.96 Å. Both Dy(2)-Ge(3) bond lengths are 3.07 Å. There is one shorter (3.00 Å) and two longer (3.04 Å) Dy(2)-Ge(1) bond lengths. Al(1) is bonded to two equivalent Dy(1), one Ge(3), and three equivalent Ge(1) atoms to form distorted AlDy2Ge4 tetrahedra that share corners with two equivalent Ge(1)Dy4Al3 pentagonal bipyramids and edges with four equivalent Al(1)Dy2Ge4 tetrahedra. The Al(1)-Ge(3) bond length is 2.57 Å. There are two shorter (2.56 Å) and one longer (2.70 Å) Al(1)-Ge(1) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one Dy(1), three equivalent Dy(2), and three equivalent Al(1) atoms to form distorted GeDy4Al3 pentagonal bipyramids that share corners with two equivalent Al(1)Dy2Ge4 tetrahedra and edges with six equivalent Ge(1)Dy4Al3 pentagonal bipyramids. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), and two equivalent Ge(3) atoms. There is one shorter (2.58 Å) and one longer (2.67 Å) Ge(2)-Ge(3) bond length. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), one Al(1), and two equivalent Ge(2) atoms.