GdTl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Gd(1) is bonded to twelve equivalent Tl(1) atoms to form GdTl12 cuboctahedra that share corners with twelve equivalent Gd(1)Tl12 cuboctahedra, edges with twenty-four equivalent Tl(1)Gd4Tl8 cuboctahedra, faces with six equivalent Gd(1)Tl12 cuboctahedra, and faces with twelve equivalent Tl(1)Gd4Tl8 cuboctahedra. Tl(1) is bonded to four equivalent Gd(1) and eight equivalent Tl(1) atoms to form distorted TlGd4Tl8 cuboctahedra that share corners with twelve equivalent Tl(1)Gd4Tl8 cuboctahedra, edges with eight equivalent Gd(1)Tl12 cuboctahedra, edges with sixteen equivalent Tl(1)Gd4Tl8 cuboctahedra, faces with four equivalent Gd(1)Tl12 cuboctahedra, and faces with fourteen equivalent Tl(1)Gd4Tl8 cuboctahedra.
GdTl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Gd(1) is bonded to twelve equivalent Tl(1) atoms to form GdTl12 cuboctahedra that share corners with twelve equivalent Gd(1)Tl12 cuboctahedra, edges with twenty-four equivalent Tl(1)Gd4Tl8 cuboctahedra, faces with six equivalent Gd(1)Tl12 cuboctahedra, and faces with twelve equivalent Tl(1)Gd4Tl8 cuboctahedra. All Gd(1)-Tl(1) bond lengths are 3.36 Å. Tl(1) is bonded to four equivalent Gd(1) and eight equivalent Tl(1) atoms to form distorted TlGd4Tl8 cuboctahedra that share corners with twelve equivalent Tl(1)Gd4Tl8 cuboctahedra, edges with eight equivalent Gd(1)Tl12 cuboctahedra, edges with sixteen equivalent Tl(1)Gd4Tl8 cuboctahedra, faces with four equivalent Gd(1)Tl12 cuboctahedra, and faces with fourteen equivalent Tl(1)Gd4Tl8 cuboctahedra. All Tl(1)-Tl(1) bond lengths are 3.36 Å.