data_[Pm16Cu24Ag8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Fmmm]
_cell_length_a [7.3746]
_cell_length_b [8.8440]
_cell_length_c [15.2601]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [Pm2Cu3Ag]
_chemical_formula_sum '[Pm16 Cu24 Ag8]'
_cell_volume [995.2860]
_cell_formula_units_Z [8]
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  0.2470  0.0000  0.0000  1
  Pm  Pm1  8  0.2500  0.2500  0.2500  1
  Cu  Cu2  16  0.0000  0.2423  0.0811  1
  Cu  Cu3  8  0.0000  0.0000  0.1618  1
  Ag  Ag4  8  0.0000  0.0000  0.3336  1
]