data_[Pm4Sm20Dy4Er8]
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
  Dy  1.2200  1.7500  1.1310
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [5.6334]
_cell_length_b [20.1944]
_cell_length_c [10.6752]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [PmSm5DyEr2]
_chemical_formula_sum '[Pm4 Sm20 Dy4 Er8]'
_cell_volume [1214.4417]
_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  0.2011  0.0098  1
  Sm  Sm1  4  0.0000  0.0169  0.0233  1
  Sm  Sm2  4  0.0000  0.2816  0.3082  1
  Sm  Sm3  4  0.0000  0.2980  0.7049  1
  Sm  Sm4  4  0.0000  0.3918  0.0249  1
  Sm  Sm5  4  0.0000  0.4790  0.7409  1
  Dy  Dy6  4  0.0000  0.4119  0.4560  1
  Er  Er7  4  0.0000  0.1100  0.7378  1
  Er  Er8  4  0.0000  0.1157  0.3182  1
]