PmTl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Pm(1) is bonded to twelve equivalent Tl(1) atoms to form PmTl12 cuboctahedra that share corners with twelve equivalent Pm(1)Tl12 cuboctahedra, edges with twenty-four equivalent Tl(1)Pm4Tl8 cuboctahedra, faces with six equivalent Pm(1)Tl12 cuboctahedra, and faces with twelve equivalent Tl(1)Pm4Tl8 cuboctahedra. Tl(1) is bonded to four equivalent Pm(1) and eight equivalent Tl(1) atoms to form distorted TlPm4Tl8 cuboctahedra that share corners with twelve equivalent Tl(1)Pm4Tl8 cuboctahedra, edges with eight equivalent Pm(1)Tl12 cuboctahedra, edges with sixteen equivalent Tl(1)Pm4Tl8 cuboctahedra, faces with four equivalent Pm(1)Tl12 cuboctahedra, and faces with fourteen equivalent Tl(1)Pm4Tl8 cuboctahedra.
PmTl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Pm(1) is bonded to twelve equivalent Tl(1) atoms to form PmTl12 cuboctahedra that share corners with twelve equivalent Pm(1)Tl12 cuboctahedra, edges with twenty-four equivalent Tl(1)Pm4Tl8 cuboctahedra, faces with six equivalent Pm(1)Tl12 cuboctahedra, and faces with twelve equivalent Tl(1)Pm4Tl8 cuboctahedra. All Pm(1)-Tl(1) bond lengths are 3.38 Å. Tl(1) is bonded to four equivalent Pm(1) and eight equivalent Tl(1) atoms to form distorted TlPm4Tl8 cuboctahedra that share corners with twelve equivalent Tl(1)Pm4Tl8 cuboctahedra, edges with eight equivalent Pm(1)Tl12 cuboctahedra, edges with sixteen equivalent Tl(1)Pm4Tl8 cuboctahedra, faces with four equivalent Pm(1)Tl12 cuboctahedra, and faces with fourteen equivalent Tl(1)Pm4Tl8 cuboctahedra. All Tl(1)-Tl(1) bond lengths are 3.38 Å.