Dy2Pd2Si crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 9-coordinate geometry to three equivalent Pd(1), four equivalent Pd(2), and two equivalent Si(1) atoms. In the second Dy site, Dy(2) is bonded in a 9-coordinate geometry to two equivalent Pd(2), three equivalent Pd(1), and four equivalent Si(1) atoms. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to three equivalent Dy(1), three equivalent Dy(2), and one Si(1) atom. In the second Pd site, Pd(2) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), one Pd(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 10-coordinate geometry to two equivalent Dy(1), four equivalent Dy(2), one Pd(1), two equivalent Pd(2), and one Si(1) atom.
Dy2Pd2Si crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 9-coordinate geometry to three equivalent Pd(1), four equivalent Pd(2), and two equivalent Si(1) atoms. There is one shorter (3.03 Å) and two longer (3.17 Å) Dy(1)-Pd(1) bond lengths. There are two shorter (3.04 Å) and two longer (3.06 Å) Dy(1)-Pd(2) bond lengths. There is one shorter (3.17 Å) and one longer (3.18 Å) Dy(1)-Si(1) bond length. In the second Dy site, Dy(2) is bonded in a 9-coordinate geometry to two equivalent Pd(2), three equivalent Pd(1), and four equivalent Si(1) atoms. There is one shorter (2.87 Å) and one longer (3.22 Å) Dy(2)-Pd(2) bond length. There are two shorter (2.92 Å) and one longer (2.97 Å) Dy(2)-Pd(1) bond length. There are two shorter (2.94 Å) and two longer (3.15 Å) Dy(2)-Si(1) bond lengths. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to three equivalent Dy(1), three equivalent Dy(2), and one Si(1) atom. The Pd(1)-Si(1) bond length is 2.65 Å. In the second Pd site, Pd(2) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(1), one Pd(2), and two equivalent Si(1) atoms. The Pd(2)-Pd(2) bond length is 2.73 Å. Both Pd(2)-Si(1) bond lengths are 2.43 Å. Si(1) is bonded in a 10-coordinate geometry to two equivalent Dy(1), four equivalent Dy(2), one Pd(1), two equivalent Pd(2), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.45 Å.