data_[Pm12Sm4Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [9.1883]
_cell_length_b [8.7821]
_cell_length_c [9.7444]
_cell_angle_alpha [90.0000]
_cell_angle_beta [121.8835]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Pm3SmPb]
_chemical_formula_sum '[Pm12 Sm4 Pb4]'
_cell_volume [667.6650]
_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  4  0.0825  0.0819  0.7916  1
  Pm  Pm1  4  0.2856  0.0633  0.2111  1
  Pm  Pm2  4  0.4133  0.6965  0.4562  1
  Sm  Sm3  4  0.2831  0.0634  0.5714  1
  Pb  Pb4  4  0.0954  0.7495  0.0473  1
]