data_[Rb4Sn4Bi4O2]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.6336]
_cell_length_b [5.1369]
_cell_length_c [8.8295]
_cell_angle_alpha [90.0000]
_cell_angle_beta [127.7249]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Sn2Bi2O]
_chemical_formula_sum '[Rb4 Sn4 Bi4 O2]'
_cell_volume [489.1017]
_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  0.0566  0.5000  0.2761  1
  Sn  Sn1  4  0.1832  0.0000  0.0808  1
  Bi  Bi2  4  0.1521  0.0000  0.6910  1
  O  O3  2  0.0000  0.0000  0.0000  1
]