Ca3Ho is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ca(1) is bonded to eight equivalent Ca(1) and four equivalent Ho(1) atoms to form CaCa8Ho4 cuboctahedra that share corners with twelve equivalent Ca(1)Ca8Ho4 cuboctahedra, edges with eight equivalent Ho(1)Ca12 cuboctahedra, edges with sixteen equivalent Ca(1)Ca8Ho4 cuboctahedra, faces with four equivalent Ho(1)Ca12 cuboctahedra, and faces with fourteen equivalent Ca(1)Ca8Ho4 cuboctahedra. Ho(1) is bonded to twelve equivalent Ca(1) atoms to form HoCa12 cuboctahedra that share corners with twelve equivalent Ho(1)Ca12 cuboctahedra, edges with twenty-four equivalent Ca(1)Ca8Ho4 cuboctahedra, faces with six equivalent Ho(1)Ca12 cuboctahedra, and faces with twelve equivalent Ca(1)Ca8Ho4 cuboctahedra.
Ca3Ho is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ca(1) is bonded to eight equivalent Ca(1) and four equivalent Ho(1) atoms to form CaCa8Ho4 cuboctahedra that share corners with twelve equivalent Ca(1)Ca8Ho4 cuboctahedra, edges with eight equivalent Ho(1)Ca12 cuboctahedra, edges with sixteen equivalent Ca(1)Ca8Ho4 cuboctahedra, faces with four equivalent Ho(1)Ca12 cuboctahedra, and faces with fourteen equivalent Ca(1)Ca8Ho4 cuboctahedra. All Ca(1)-Ca(1) bond lengths are 3.78 Å. All Ca(1)-Ho(1) bond lengths are 3.78 Å. Ho(1) is bonded to twelve equivalent Ca(1) atoms to form HoCa12 cuboctahedra that share corners with twelve equivalent Ho(1)Ca12 cuboctahedra, edges with twenty-four equivalent Ca(1)Ca8Ho4 cuboctahedra, faces with six equivalent Ho(1)Ca12 cuboctahedra, and faces with twelve equivalent Ca(1)Ca8Ho4 cuboctahedra.