Dy3Ag3Ga8 crystallizes in the orthorhombic Immm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to four equivalent Ga(1) and eight equivalent Ga(2) atoms to form distorted DyGa12 cuboctahedra that share edges with two equivalent Ag(1)Dy4Ga4Ag4 cuboctahedra and faces with two equivalent Dy(1)Ga12 cuboctahedra. In the second Dy site, Dy(2) is bonded in a 16-coordinate geometry to two equivalent Ag(1), two equivalent Ag(2), six equivalent Ga(1), and six equivalent Ga(2) atoms. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to four equivalent Dy(2), four equivalent Ag(2), and four equivalent Ga(1) atoms to form distorted AgDy4Ga4Ag4 cuboctahedra that share edges with two equivalent Dy(1)Ga12 cuboctahedra and faces with two equivalent Ag(1)Dy4Ga4Ag4 cuboctahedra. In the second Ag site, Ag(2) is bonded in a 10-coordinate geometry to two equivalent Dy(2), two equivalent Ag(1), two equivalent Ga(2), and four equivalent Ga(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Dy(1), three equivalent Dy(2), one Ag(1), two equivalent Ag(2), and three equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), three equivalent Dy(2), one Ag(2), one Ga(2), and three equivalent Ga(1) atoms.
Dy3Ag3Ga8 crystallizes in the orthorhombic Immm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to four equivalent Ga(1) and eight equivalent Ga(2) atoms to form distorted DyGa12 cuboctahedra that share edges with two equivalent Ag(1)Dy4Ga4Ag4 cuboctahedra and faces with two equivalent Dy(1)Ga12 cuboctahedra. All Dy(1)-Ga(1) bond lengths are 3.24 Å. All Dy(1)-Ga(2) bond lengths are 3.27 Å. In the second Dy site, Dy(2) is bonded in a 16-coordinate geometry to two equivalent Ag(1), two equivalent Ag(2), six equivalent Ga(1), and six equivalent Ga(2) atoms. Both Dy(2)-Ag(1) bond lengths are 3.44 Å. Both Dy(2)-Ag(2) bond lengths are 3.19 Å. There are four shorter (3.13 Å) and two longer (3.32 Å) Dy(2)-Ga(1) bond lengths. There are four shorter (3.11 Å) and two longer (3.52 Å) Dy(2)-Ga(2) bond lengths. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to four equivalent Dy(2), four equivalent Ag(2), and four equivalent Ga(1) atoms to form distorted AgDy4Ga4Ag4 cuboctahedra that share edges with two equivalent Dy(1)Ga12 cuboctahedra and faces with two equivalent Ag(1)Dy4Ga4Ag4 cuboctahedra. All Ag(1)-Ag(2) bond lengths are 2.85 Å. All Ag(1)-Ga(1) bond lengths are 2.78 Å. In the second Ag site, Ag(2) is bonded in a 10-coordinate geometry to two equivalent Dy(2), two equivalent Ag(1), two equivalent Ga(2), and four equivalent Ga(1) atoms. Both Ag(2)-Ga(2) bond lengths are 2.64 Å. All Ag(2)-Ga(1) bond lengths are 2.90 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Dy(1), three equivalent Dy(2), one Ag(1), two equivalent Ag(2), and three equivalent Ga(2) atoms. There are two shorter (2.63 Å) and one longer (2.69 Å) Ga(1)-Ga(2) bond length. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), three equivalent Dy(2), one Ag(2), one Ga(2), and three equivalent Ga(1) atoms. The Ga(2)-Ga(2) bond length is 2.51 Å.