data_[K4Ni2Pb2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ni  1.9100  1.3500  0.7400
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [8.0820]
_cell_length_b [7.6294]
_cell_length_c [6.0384]
_cell_angle_alpha [90.0000]
_cell_angle_beta [131.6563]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [K2NiPbO4]
_chemical_formula_sum '[K4 Ni2 Pb2 O8]'
_cell_volume [278.1869]
_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
[
  K  K0  2  0.0000  0.2701  0.0000  1.0
  K  K1  2  0.0000  0.5105  0.5000  1.0
  Ni  Ni2  2  0.0000  0.7452  0.0000  1.0
  Pb  Pb3  2  0.0000  0.9916  0.5000  1.0
  O  O4  4  0.1624  0.8266  0.4110  1.0
  O  O5  4  0.2454  0.6082  0.0860  1.0
]