Ho3Pm is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Pm(1) atoms to form HoPm4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Pm4Ho8 cuboctahedra, edges with eight equivalent Pm(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Pm4Ho8 cuboctahedra, faces with four equivalent Pm(1)Ho12 cuboctahedra, and faces with fourteen equivalent Ho(1)Pm4Ho8 cuboctahedra. Pm(1) is bonded to twelve equivalent Ho(1) atoms to form PmHo12 cuboctahedra that share corners with twelve equivalent Pm(1)Ho12 cuboctahedra, edges with twenty-four equivalent Ho(1)Pm4Ho8 cuboctahedra, faces with six equivalent Pm(1)Ho12 cuboctahedra, and faces with twelve equivalent Ho(1)Pm4Ho8 cuboctahedra.
Ho3Pm is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Pm(1) atoms to form HoPm4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Pm4Ho8 cuboctahedra, edges with eight equivalent Pm(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Pm4Ho8 cuboctahedra, faces with four equivalent Pm(1)Ho12 cuboctahedra, and faces with fourteen equivalent Ho(1)Pm4Ho8 cuboctahedra. All Ho(1)-Ho(1) bond lengths are 3.56 Å. All Ho(1)-Pm(1) bond lengths are 3.56 Å. Pm(1) is bonded to twelve equivalent Ho(1) atoms to form PmHo12 cuboctahedra that share corners with twelve equivalent Pm(1)Ho12 cuboctahedra, edges with twenty-four equivalent Ho(1)Pm4Ho8 cuboctahedra, faces with six equivalent Pm(1)Ho12 cuboctahedra, and faces with twelve equivalent Ho(1)Pm4Ho8 cuboctahedra.