data_[Na2Sm10Pb12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sm  1.1700  1.8500  1.2290
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.9881]
_cell_length_b [9.0764]
_cell_length_c [15.4623]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [NaSm5Pb6]
_chemical_formula_sum '[Na2 Sm10 Pb12]'
_cell_volume [700.0427]
_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
[
  Na  Na0  2  0.0000  0.0000  0.0000  1
  Sm  Sm1  4  0.0000  0.0000  0.3338  1
  Sm  Sm2  4  0.0000  0.5000  0.3443  1
  Sm  Sm3  2  0.0000  0.5000  0.0000  1
  Pb  Pb4  8  0.0000  0.2507  0.1688  1
  Pb  Pb5  4  0.0000  0.2498  0.5000  1
]