data_[K4Rb4Bi8]
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
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.9360]
_cell_length_b [7.3937]
_cell_length_c [10.9858]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [KRbBi2]
_chemical_formula_sum '[K4 Rb4 Bi8]'
_cell_volume [644.6091]
_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
[
  K  K0  4  0.0015  0.7500  0.2750  1
  Rb  Rb1  4  0.0071  0.7500  0.7178  1
  Bi  Bi2  8  0.1931  0.5314  0.0021  1
]