data_[Sr4Pm12Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Pm  1.1300  1.8500  1.1100
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.9715]
_cell_length_b [4.8300]
_cell_length_c [9.8813]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.9891]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [SrPm3Pb2]
_chemical_formula_sum '[Sr4 Pm12 Pb8]'
_cell_volume [827.2391]
_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
[
  Sr  Sr0  4  0.1118  0.0000  0.1280  1
  Pm  Pm1  4  0.0553  0.0000  0.6829  1
  Pm  Pm2  4  0.1460  0.5000  0.4830  1
  Pm  Pm3  4  0.1954  0.5000  0.8832  1
  Pb  Pb4  4  0.0097  0.5000  0.8403  1
  Pb  Pb5  4  0.2406  0.0000  0.7073  1
]