data_[Ho20Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [15.4885]
_cell_length_b [6.2143]
_cell_length_c [9.0913]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.2369]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Ho5Er2]
_chemical_formula_sum '[Ho20 Er8]'
_cell_volume [869.8526]
_cell_formula_units_Z [4]
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  8  0.1426  0.1668  0.9642  1
  Ho  Ho1  8  0.2143  0.3334  0.3214  1
  Ho  Ho2  4  0.0000  0.1669  0.2500  1
  Er  Er3  8  0.0713  0.3336  0.6071  1
]