LaTl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. La(1) is bonded to twelve equivalent Tl(1) atoms to form LaTl12 cuboctahedra that share corners with twelve equivalent La(1)Tl12 cuboctahedra, edges with twenty-four equivalent Tl(1)La4Tl8 cuboctahedra, faces with six equivalent La(1)Tl12 cuboctahedra, and faces with twelve equivalent Tl(1)La4Tl8 cuboctahedra. Tl(1) is bonded to four equivalent La(1) and eight equivalent Tl(1) atoms to form distorted TlLa4Tl8 cuboctahedra that share corners with twelve equivalent Tl(1)La4Tl8 cuboctahedra, edges with eight equivalent La(1)Tl12 cuboctahedra, edges with sixteen equivalent Tl(1)La4Tl8 cuboctahedra, faces with four equivalent La(1)Tl12 cuboctahedra, and faces with fourteen equivalent Tl(1)La4Tl8 cuboctahedra.
LaTl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. La(1) is bonded to twelve equivalent Tl(1) atoms to form LaTl12 cuboctahedra that share corners with twelve equivalent La(1)Tl12 cuboctahedra, edges with twenty-four equivalent Tl(1)La4Tl8 cuboctahedra, faces with six equivalent La(1)Tl12 cuboctahedra, and faces with twelve equivalent Tl(1)La4Tl8 cuboctahedra. All La(1)-Tl(1) bond lengths are 3.44 Å. Tl(1) is bonded to four equivalent La(1) and eight equivalent Tl(1) atoms to form distorted TlLa4Tl8 cuboctahedra that share corners with twelve equivalent Tl(1)La4Tl8 cuboctahedra, edges with eight equivalent La(1)Tl12 cuboctahedra, edges with sixteen equivalent Tl(1)La4Tl8 cuboctahedra, faces with four equivalent La(1)Tl12 cuboctahedra, and faces with fourteen equivalent Tl(1)La4Tl8 cuboctahedra. All Tl(1)-Tl(1) bond lengths are 3.44 Å.