data_[Rb2Na2Bi2O6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.1900]
_cell_length_b [3.5346]
_cell_length_c [8.7039]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.6550]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbNaBiO3]
_chemical_formula_sum '[Rb2 Na2 Bi2 O6]'
_cell_volume [220.4696]
_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  2  0.4315  0.2500  0.6866  1.0
  Na  Na1  2  0.1917  0.7500  0.0241  1.0
  Bi  Bi2  2  0.0700  0.2500  0.3233  1.0
  O  O3  2  0.0721  0.2500  0.8096  1.0
  O  O4  2  0.1753  0.7500  0.4818  1.0
  O  O5  2  0.2985  0.2500  0.1859  1.0
]