data_[Rb4Sn12Bi8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sn  1.9600  1.4500  0.8300
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.1198]
_cell_length_b [5.7725]
_cell_length_c [9.3908]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.7860]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbSn3Bi2]
_chemical_formula_sum '[Rb4 Sn12 Bi8]'
_cell_volume [852.4767]
_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  4  0.1349  0.0000  0.1882  1
  Sn  Sn1  4  0.0473  0.0000  0.6917  1
  Sn  Sn2  4  0.0969  0.5000  0.5391  1
  Sn  Sn3  4  0.2254  0.5000  0.0103  1
  Bi  Bi4  4  0.0272  0.5000  0.8542  1
  Bi  Bi5  4  0.1972  0.0000  0.6231  1
]