Ho3Sc is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Sc(1) atoms to form HoHo8Sc4 cuboctahedra that share corners with four equivalent Sc(1)Ho12 cuboctahedra, corners with fourteen equivalent Ho(1)Ho8Sc4 cuboctahedra, edges with six equivalent Sc(1)Ho12 cuboctahedra, edges with twelve equivalent Ho(1)Ho8Sc4 cuboctahedra, faces with four equivalent Sc(1)Ho12 cuboctahedra, and faces with sixteen equivalent Ho(1)Ho8Sc4 cuboctahedra. Sc(1) is bonded to twelve equivalent Ho(1) atoms to form ScHo12 cuboctahedra that share corners with six equivalent Sc(1)Ho12 cuboctahedra, corners with twelve equivalent Ho(1)Ho8Sc4 cuboctahedra, edges with eighteen equivalent Ho(1)Ho8Sc4 cuboctahedra, faces with eight equivalent Sc(1)Ho12 cuboctahedra, and faces with twelve equivalent Ho(1)Ho8Sc4 cuboctahedra.
Ho3Sc is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Sc(1) atoms to form HoHo8Sc4 cuboctahedra that share corners with four equivalent Sc(1)Ho12 cuboctahedra, corners with fourteen equivalent Ho(1)Ho8Sc4 cuboctahedra, edges with six equivalent Sc(1)Ho12 cuboctahedra, edges with twelve equivalent Ho(1)Ho8Sc4 cuboctahedra, faces with four equivalent Sc(1)Ho12 cuboctahedra, and faces with sixteen equivalent Ho(1)Ho8Sc4 cuboctahedra. There are a spread of Ho(1)-Ho(1) bond distances ranging from 3.43-3.59 Å. There are two shorter (3.39 Å) and two longer (3.54 Å) Ho(1)-Sc(1) bond lengths. Sc(1) is bonded to twelve equivalent Ho(1) atoms to form ScHo12 cuboctahedra that share corners with six equivalent Sc(1)Ho12 cuboctahedra, corners with twelve equivalent Ho(1)Ho8Sc4 cuboctahedra, edges with eighteen equivalent Ho(1)Ho8Sc4 cuboctahedra, faces with eight equivalent Sc(1)Ho12 cuboctahedra, and faces with twelve equivalent Ho(1)Ho8Sc4 cuboctahedra.