MgDyTl crystallizes in the hexagonal P-62m space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent Tl(1) and two equivalent Tl(2) atoms. Dy(1) is bonded in a 5-coordinate geometry to one Tl(2) and four equivalent Tl(1) atoms. There are two inequivalent Tl sites. In the first Tl site, Tl(2) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Dy(1) atoms. In the second Tl site, Tl(1) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Dy(1) atoms.
MgDyTl crystallizes in the hexagonal P-62m space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent Tl(1) and two equivalent Tl(2) atoms. Both Mg(1)-Tl(1) bond lengths are 2.90 Å. Both Mg(1)-Tl(2) bond lengths are 2.94 Å. Dy(1) is bonded in a 5-coordinate geometry to one Tl(2) and four equivalent Tl(1) atoms. The Dy(1)-Tl(2) bond length is 3.22 Å. All Dy(1)-Tl(1) bond lengths are 3.21 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(2) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Dy(1) atoms. In the second Tl site, Tl(1) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Dy(1) atoms.