The compound described by Ho3Sb is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Sb(1) atoms to form distorted HoHo8Sb4 cuboctahedra that share corners with twelve equivalent Ho(1)Ho8Sb4 cuboctahedra, edges with eight equivalent Ho(1)Ho8Sb4 cuboctahedra, edges with eight equivalent Sb(1)Ho12 cuboctahedra, faces with four equivalent Sb(1)Ho12 cuboctahedra, and faces with ten equivalent Ho(1)Ho8Sb4 cuboctahedra. In the second Ho site, Ho(2) is bonded in a square co-planar geometry to eight equivalent Ho(1) and four equivalent Sb(1) atoms. Sb(1) is bonded to four equivalent Ho(2) and eight equivalent Ho(1) atoms to form SbHo12 cuboctahedra that share corners with four equivalent Sb(1)Ho12 cuboctahedra, edges with eight equivalent Sb(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Ho8Sb4 cuboctahedra, faces with four equivalent Sb(1)Ho12 cuboctahedra, and faces with eight equivalent Ho(1)Ho8Sb4 cuboctahedra. is represented by the CIF card [CIF]
data_Ho3Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.146
_cell_length_b   6.146
_cell_length_c   6.146
_cell_angle_alpha   135.892
_cell_angle_beta   135.892
_cell_angle_gamma   64.147
_symmetry_Int_Tables_number   1
_cell_volume   110.926
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ho  Ho0  1  0.750  0.250  0.500  1.0
  Ho  Ho1  1  0.250  0.750  0.500  1.0
  Ho  Ho2  1  0.500  0.500  0.000  1.0
  Sb  Sb3  1  0.000  0.000  0.000  1.0
[/CIF]
.
The compound described by Ho3Sb is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Sb(1) atoms to form distorted HoHo8Sb4 cuboctahedra that share corners with twelve equivalent Ho(1)Ho8Sb4 cuboctahedra, edges with eight equivalent Ho(1)Ho8Sb4 cuboctahedra, edges with eight equivalent Sb(1)Ho12 cuboctahedra, faces with four equivalent Sb(1)Ho12 cuboctahedra, and faces with ten equivalent Ho(1)Ho8Sb4 cuboctahedra. In the second Ho site, Ho(2) is bonded in a square co-planar geometry to eight equivalent Ho(1) and four equivalent Sb(1) atoms. Sb(1) is bonded to four equivalent Ho(2) and eight equivalent Ho(1) atoms to form SbHo12 cuboctahedra that share corners with four equivalent Sb(1)Ho12 cuboctahedra, edges with eight equivalent Sb(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Ho8Sb4 cuboctahedra, faces with four equivalent Sb(1)Ho12 cuboctahedra, and faces with eight equivalent Ho(1)Ho8Sb4 cuboctahedra. is represented by the CIF card [CIF]
data_Ho3Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.146
_cell_length_b   6.146
_cell_length_c   6.146
_cell_angle_alpha   135.892
_cell_angle_beta   135.892
_cell_angle_gamma   64.147
_symmetry_Int_Tables_number   1
_cell_volume   110.926
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ho  Ho0  1  0.750  0.250  0.500  1.0
  Ho  Ho1  1  0.250  0.750  0.500  1.0
  Ho  Ho2  1  0.500  0.500  0.000  1.0
  Sb  Sb3  1  0.000  0.000  0.000  1.0
[/CIF]
.