data_[K4Rb4Pb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.9080]
_cell_length_b [6.3140]
_cell_length_c [9.0908]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.8441]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Rb2Pb3]
_chemical_formula_sum '[K4 Rb4 Pb6]'
_cell_volume [663.0423]
_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  4  0.1486  0.0000  0.0002  1.0
  Rb  Rb1  4  0.1757  0.0000  0.5602  1.0
  Pb  Pb2  4  0.0362  0.5000  0.6950  1.0
  Pb  Pb3  2  0.0000  0.5000  0.0000  1.0
]