data_[Pm8Pr6Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [10.7792]
_cell_length_b [5.7616]
_cell_length_c [12.1040]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Pm4Pr3Er4]
_chemical_formula_sum '[Pm8 Pr6 Er8]'
_cell_volume [751.7270]
_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  0.2134  0.0000  0.7513  1
  Pr  Pr1  4  0.2904  0.0000  0.4103  1
  Pr  Pr2  2  0.0000  0.0000  0.2534  1
  Pm  Pm3  2  0.0000  0.0000  0.9591  1
  Pm  Pm4  2  0.5000  0.0000  0.8845  1
  Er  Er5  4  0.3029  0.0000  0.1047  1
  Er  Er6  2  0.0000  0.0000  0.5565  1
  Er  Er7  2  0.5000  0.0000  0.6123  1
]