data_[Rb4Bi2As4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Bi  2.0200  1.6000  1.0350
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.5747]
_cell_length_b [6.1444]
_cell_length_c [7.9236]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.8762]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Bi(AsO3)2]
_chemical_formula_sum '[Rb4 Bi2 As4 O12]'
_cell_volume [441.8728]
_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  0.2156  0.5000  0.2204  1.0
  Bi  Bi1  2  0.0000  0.5000  0.5000  1.0
  As  As2  4  0.0484  0.0000  0.2154  1.0
  O  O3  8  0.0222  0.2351  0.7304  1.0
  O  O4  4  0.2421  0.0000  0.3695  1.0
]