data_[K3Ge1Pb1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ge  2.0100  1.2500  0.7700
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Pm-3m]
_cell_length_a [6.4052]
_cell_length_b [6.4052]
_cell_length_c [6.4052]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [221]
_chemical_formula_structural [K3GePb]
_chemical_formula_sum '[K3 Ge1 Pb1]'
_cell_volume [262.7794]
_cell_formula_units_Z [1]
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  3  0.0000  0.0000  0.5000  1
  Ge  Ge1  1  0.0000  0.0000  0.0000  1
  Pb  Pb2  1  0.5000  0.5000  0.5000  1
]