Na3Hf is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Na(1) is bonded to eight equivalent Na(1) and four equivalent Hf(1) atoms to form NaNa8Hf4 cuboctahedra that share corners with twelve equivalent Na(1)Na8Hf4 cuboctahedra, edges with eight equivalent Hf(1)Na12 cuboctahedra, edges with sixteen equivalent Na(1)Na8Hf4 cuboctahedra, faces with four equivalent Hf(1)Na12 cuboctahedra, and faces with fourteen equivalent Na(1)Na8Hf4 cuboctahedra. Hf(1) is bonded to twelve equivalent Na(1) atoms to form HfNa12 cuboctahedra that share corners with twelve equivalent Hf(1)Na12 cuboctahedra, edges with twenty-four equivalent Na(1)Na8Hf4 cuboctahedra, faces with six equivalent Hf(1)Na12 cuboctahedra, and faces with twelve equivalent Na(1)Na8Hf4 cuboctahedra.
Na3Hf is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Na(1) is bonded to eight equivalent Na(1) and four equivalent Hf(1) atoms to form NaNa8Hf4 cuboctahedra that share corners with twelve equivalent Na(1)Na8Hf4 cuboctahedra, edges with eight equivalent Hf(1)Na12 cuboctahedra, edges with sixteen equivalent Na(1)Na8Hf4 cuboctahedra, faces with four equivalent Hf(1)Na12 cuboctahedra, and faces with fourteen equivalent Na(1)Na8Hf4 cuboctahedra. All Na(1)-Na(1) bond lengths are 3.44 Å. All Na(1)-Hf(1) bond lengths are 3.44 Å. Hf(1) is bonded to twelve equivalent Na(1) atoms to form HfNa12 cuboctahedra that share corners with twelve equivalent Hf(1)Na12 cuboctahedra, edges with twenty-four equivalent Na(1)Na8Hf4 cuboctahedra, faces with six equivalent Hf(1)Na12 cuboctahedra, and faces with twelve equivalent Na(1)Na8Hf4 cuboctahedra.