data_[Pm10Nd4Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.5318]
_cell_length_b [9.1419]
_cell_length_c [23.5276]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Pm5(NdEr2)2]
_chemical_formula_sum '[Pm10 Nd4 Er8]'
_cell_volume [759.6549]
_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  8  0.0000  0.1983  0.1429  1
  Pm  Pm1  2  0.0000  0.5000  0.5000  1
  Nd  Nd2  4  0.0000  0.0000  0.2681  1
  Er  Er3  4  0.0000  0.0000  0.4037  1
  Er  Er4  4  0.0000  0.3146  0.0000  1
]