data_[K2Cu4Pb2Cl16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Cu  1.9000  1.3500  0.8200
  Pb  2.3300  1.8000  1.1225
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [6.9875]
_cell_length_b [6.9875]
_cell_length_c [13.2018]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [KCu2PbCl8]
_chemical_formula_sum '[K2 Cu4 Pb2 Cl16]'
_cell_volume [644.5909]
_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  0.5000  0.2500  1
  Cu  Cu1  2  0.0000  0.0000  0.5000  1
  Cu  Cu2  2  0.0000  0.5000  0.7500  1
  Pb  Pb3  2  0.0000  0.0000  0.0000  1
  Cl  Cl4  8  0.0589  0.8046  0.7765  1
  Cl  Cl5  8  0.1409  0.2874  0.4681  1
]