data_[Pb4C2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pb  2.3300  1.8000  1.1225
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.1652]
_cell_length_b [5.0573]
_cell_length_c [7.7368]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.9091]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Pb2CO4]
_chemical_formula_sum '[Pb4 C2 O8]'
_cell_volume [226.8130]
_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
[
  Pb  Pb0  2  0.2230  0.2500  0.4631  1
  Pb  Pb1  2  0.2600  0.7500  0.9946  1
  C  C2  2  0.0175  0.2500  0.7682  1
  O  O3  4  0.1054  0.0234  0.7050  1
  O  O4  2  0.1032  0.2500  0.9646  1
  O  O5  2  0.2222  0.7500  0.3003  1
]