DyGa3 crystallizes in the trigonal R-3m space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to three equivalent Ga(2) and nine equivalent Ga(1) atoms to form a mixture of distorted face and corner-sharing DyGa12 cuboctahedra. In the second Dy site, Dy(2) is bonded to three equivalent Ga(1) and nine equivalent Ga(2) atoms to form a mixture of face and corner-sharing DyGa12 cuboctahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Dy(1), three equivalent Dy(2), two equivalent Ga(1), and four equivalent Ga(2) atoms. In the second Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Dy(2), three equivalent Dy(1), two equivalent Ga(2), and four equivalent Ga(1) atoms.
DyGa3 crystallizes in the trigonal R-3m space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to three equivalent Ga(2) and nine equivalent Ga(1) atoms to form a mixture of distorted face and corner-sharing DyGa12 cuboctahedra. All Dy(1)-Ga(2) bond lengths are 3.01 Å. There are three shorter (2.98 Å) and six longer (3.11 Å) Dy(1)-Ga(1) bond lengths. In the second Dy site, Dy(2) is bonded to three equivalent Ga(1) and nine equivalent Ga(2) atoms to form a mixture of face and corner-sharing DyGa12 cuboctahedra. All Dy(2)-Ga(1) bond lengths are 2.96 Å. There are three shorter (3.02 Å) and six longer (3.09 Å) Dy(2)-Ga(2) bond lengths. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Dy(1), three equivalent Dy(2), two equivalent Ga(1), and four equivalent Ga(2) atoms. Both Ga(2)-Ga(1) bond lengths are 2.81 Å. There are two shorter (2.87 Å) and two longer (3.00 Å) Ga(2)-Ga(2) bond lengths. In the second Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Dy(2), three equivalent Dy(1), two equivalent Ga(2), and four equivalent Ga(1) atoms. There are two shorter (2.62 Å) and two longer (2.81 Å) Ga(1)-Ga(1) bond lengths.