data_[K2Rb4Bi4]
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 [C2/m]
_cell_length_a [12.4342]
_cell_length_b [5.1973]
_cell_length_c [7.7381]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.7066]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K(RbBi)2]
_chemical_formula_sum '[K2 Rb4 Bi4]'
_cell_volume [495.5513]
_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
[
  Rb  Rb0  4  0.1361  0.5000  0.3535  1.0
  K  K1  2  0.0000  0.0000  0.0000  1.0
  Bi  Bi2  4  0.2065  0.5000  0.8838  1.0
]