data_[Na2Sm2Pb2O6]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.3550]
_cell_length_b [3.5154]
_cell_length_c [10.3089]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.0179]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaSmPbO3]
_chemical_formula_sum '[Na2 Sm2 Pb2 O6]'
_cell_volume [229.9855]
_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  0.3361  0.2500  0.6920  1.0
  Sm  Sm1  2  0.1300  0.2500  0.3792  1.0
  Pb  Pb2  2  0.2505  0.7500  0.0975  1.0
  O  O3  2  0.0097  0.7500  0.2420  1.0
  O  O4  2  0.1969  0.7500  0.5254  1.0
  O  O5  2  0.4002  0.2500  0.2187  1.0
]