data_[Pm12Ag4Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ag  1.9300  1.6000  1.0867
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.6859]
_cell_length_b [6.5359]
_cell_length_c [6.5179]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.6366]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm3AgPb2]
_chemical_formula_sum '[Pm12 Ag4 Pb8]'
_cell_volume [690.7934]
_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  8  0.1688  0.1062  0.1009  1
  Pm  Pm1  4  0.0000  0.3431  0.7500  1
  Ag  Ag2  4  0.0000  0.1328  0.2500  1
  Pb  Pb3  8  0.1575  0.3950  0.5486  1
]