data_[Rb6Sn18Bi4]
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 [Immm]
_cell_length_a [5.3389]
_cell_length_b [11.7011]
_cell_length_c [15.2964]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Rb3Sn9Bi2]
_chemical_formula_sum '[Rb6 Sn18 Bi4]'
_cell_volume [955.5862]
_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  0.0000  0.0000  0.3023  1.0
  Rb  Rb1  2  0.0000  0.0000  0.0000  1.0
  Sn  Sn2  8  0.0000  0.2740  0.1450  1.0
  Sn  Sn3  8  0.0000  0.3649  0.3369  1.0
  Sn  Sn4  2  0.0000  0.5000  0.0000  1.0
  Bi  Bi5  4  0.0000  0.1978  0.5000  1.0
]