data_[K4Rb8Pb4]
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 [Cm]
_cell_length_a [16.8054]
_cell_length_b [5.8497]
_cell_length_c [10.5277]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.2679]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [KRb2Pb]
_chemical_formula_sum '[K4 Rb8 Pb4]'
_cell_volume [1033.2548]
_cell_formula_units_Z [4]
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
[
  Rb  Rb0  2  0.0556  0.5000  0.0329  1.0
  Rb  Rb1  2  0.1296  0.0000  0.6562  1.0
  Rb  Rb2  2  0.2392  0.5000  0.3798  1.0
  K  K3  2  0.2802  0.0000  0.0927  1.0
  Rb  Rb4  2  0.3689  0.5000  0.8031  1.0
  K  K5  2  0.4659  0.0000  0.4027  1.0
  Pb  Pb6  2  0.0896  0.0000  0.2872  1.0
  Pb  Pb7  2  0.4222  0.5000  0.1671  1.0
]