data_[Pm2Cu4Ag4]
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 [C2/m]
_cell_length_a [9.9745]
_cell_length_b [4.3075]
_cell_length_c [5.0788]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.9721]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm(CuAg)2]
_chemical_formula_sum '[Pm2 Cu4 Ag4]'
_cell_volume [194.4782]
_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  0.0000  0.0000  0.0000  1
  Cu  Cu1  4  0.2331  0.5000  0.1159  1
  Ag  Ag2  4  0.1479  0.5000  0.5378  1
]