data_[Pm8Dy6Er6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Dy  1.2200  1.7500  1.1310
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [3.7892]
_cell_length_b [13.1321]
_cell_length_c [13.1169]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Pm4(DyEr)3]
_chemical_formula_sum '[Pm8 Dy6 Er6]'
_cell_volume [652.6982]
_cell_formula_units_Z [2]
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  4  0.0000  0.1306  0.9997  1
  Pm  Pm1  2  0.0000  0.0000  0.3698  1
  Pm  Pm2  2  0.0000  0.0000  0.6302  1
  Dy  Dy3  4  0.0000  0.2491  0.7502  1
  Dy  Dy4  2  0.5000  0.0000  0.1686  1
  Er  Er5  4  0.5000  0.1687  0.5001  1
  Er  Er6  2  0.5000  0.0000  0.8312  1
]