data_[Pm4Nd8Sm4Y20]
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
  Sm  1.1700  1.8500  1.2290
  Y  1.2200  1.8000  1.0400
]
_symmetry_space_group_name_H-M [I4/mcm]
_cell_length_a [8.7500]
_cell_length_b [8.7500]
_cell_length_c [15.6948]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [PmNd2SmY5]
_chemical_formula_sum '[Pm4 Nd8 Sm4 Y20]'
_cell_volume [1201.6450]
_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  4  0.0000  0.0000  0.2500  1
  Nd  Nd1  8  0.1173  0.3827  0.0000  1
  Sm  Sm2  4  0.0000  0.5000  0.2500  1
  Y  Y3  16  0.2087  0.2913  0.3625  1
  Y  Y4  4  0.0000  0.0000  0.0000  1
]