data_[Na6Pm2Pb12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pm  1.1300  1.8500  1.1100
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [10.9439]
_cell_length_b [4.8333]
_cell_length_c [11.1986]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.1513]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Na3PmPb6]
_chemical_formula_sum '[Na6 Pm2 Pb12]'
_cell_volume [591.4555]
_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  0.2525  0.2500  0.9943  1
  Na  Na1  2  0.3466  0.7500  0.7994  1
  Na  Na2  2  0.4470  0.2500  0.5949  1
  Pm  Pm3  2  0.0591  0.2500  0.3812  1
  Pb  Pb4  2  0.0458  0.7500  0.9093  1
  Pb  Pb5  2  0.1537  0.2500  0.6853  1
  Pb  Pb6  2  0.1637  0.7500  0.1932  1
  Pb  Pb7  2  0.2444  0.7500  0.5107  1
  Pb  Pb8  2  0.3595  0.2500  0.2907  1
  Pb  Pb9  2  0.4472  0.7500  0.1069  1
]