data_[Pm8Y20Ho4Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  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 [I4/mcm]
_cell_length_a [8.6315]
_cell_length_b [8.6315]
_cell_length_c [15.7179]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [Pm2Y5HoEr]
_chemical_formula_sum '[Pm8 Y20 Ho4 Er4]'
_cell_volume [1171.0249]
_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
[
  Pm  Pm0  8  0.1173  0.3827  0.0000  1
  Y  Y1  16  0.2110  0.2890  0.3606  1
  Y  Y2  4  0.0000  0.0000  0.0000  1
  Ho  Ho3  4  0.0000  0.0000  0.2500  1
  Er  Er4  4  0.0000  0.5000  0.2500  1
]