data_[Pm16Sm8Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [5.3788]
_cell_length_b [11.4151]
_cell_length_c [15.6054]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Pm4Sm2Er]
_chemical_formula_sum '[Pm16 Sm8 Er4]'
_cell_volume [958.1607]
_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  0.0000  0.1007  0.6937  1
  Pm  Pm1  8  0.0000  0.2049  0.9299  1
  Sm  Sm2  8  0.0000  0.1059  0.1561  1
  Er  Er3  4  0.0000  0.0000  0.5000  1
]