data_[Pm8Sm4Sn12]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.3419]
_cell_length_b [14.5111]
_cell_length_c [5.8717]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.0569]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm2SmSn3]
_chemical_formula_sum '[Pm8 Sm4 Sn12]'
_cell_volume [715.0752]
_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  0.0000  0.0833  0.2500  1
  Pm  Pm1  4  0.0000  0.2498  0.7500  1
  Sm  Sm2  4  0.0000  0.4165  0.2500  1
  Sn  Sn3  8  0.2492  0.4171  0.0015  1
  Sn  Sn4  4  0.2500  0.2500  0.5000  1
]