data_[Na4V2Pb2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  V  1.6300  1.3500  0.7775
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [8.1434]
_cell_length_b [6.0510]
_cell_length_c [5.2331]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Na2VPbO4]
_chemical_formula_sum '[Na4 V2 Pb2 O8]'
_cell_volume [257.8642]
_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  4  0.2459  0.3110  0.4697  1.0
  V  V1  2  0.0000  0.1771  0.9968  1.0
  Pb  Pb2  2  0.0000  0.7844  0.4687  1.0
  O  O3  4  0.1921  0.3065  0.9234  1.0
  O  O4  2  0.0000  0.1402  0.3539  1.0
  O  O5  2  0.0000  0.8782  0.8943  1.0
]