data_[Pm16Sn4Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sn  1.9600  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [20.0749]
_cell_length_b [5.1739]
_cell_length_c [7.0886]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.2463]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm8Sn2Pb]
_chemical_formula_sum '[Pm16 Sn4 Pb2]'
_cell_volume [716.6756]
_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  4  0.0225  0.0000  0.7609  1
  Pm  Pm1  4  0.0939  0.5000  0.4792  1
  Pm  Pm2  4  0.1607  0.5000  0.0025  1
  Pm  Pm3  4  0.2152  0.0000  0.3296  1
  Sn  Sn4  4  0.1818  0.0000  0.7578  1
  Pb  Pb5  2  0.0000  0.5000  0.0000  1
]