data_[Pm2Y4Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Y  1.2200  1.8000  1.0400
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.0520]
_cell_length_b [4.6732]
_cell_length_c [10.7647]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.9767]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Pm(YCu)2]
_chemical_formula_sum '[Pm2 Y4 Cu4]'
_cell_volume [252.2620]
_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  2  0.3096  0.2500  0.7594  1
  Y  Y1  2  0.1555  0.2500  0.1140  1
  Y  Y2  2  0.2515  0.7500  0.5049  1
  Cu  Cu3  2  0.2131  0.2500  0.3663  1
  Cu  Cu4  2  0.3760  0.7500  0.9929  1
]