data_[Y18Ho9Er6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [3.5498]
_cell_length_b [3.5498]
_cell_length_c [95.3627]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Y6Ho3Er2]
_chemical_formula_sum '[Y18 Ho9 Er6]'
_cell_volume [1040.6619]
_cell_formula_units_Z [3]
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
[
  Y  Y0  6  0.0000  0.0000  0.0909  1
  Y  Y1  6  0.0000  0.0000  0.1820  1
  Y  Y2  6  0.0000  0.0000  0.3636  1
  Ho  Ho3  6  0.0000  0.0000  0.2727  1
  Ho  Ho4  3  0.0000  0.0000  0.0000  1
  Er  Er5  6  0.0000  0.0000  0.4545  1
]