data_[Rb4Bi2C4O12]
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
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.2229]
_cell_length_b [5.4028]
_cell_length_c [6.9936]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.7175]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Bi(CO3)2]
_chemical_formula_sum '[Rb4 Bi2 C4 O12]'
_cell_volume [408.8431]
_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  0.1952  0.5000  0.1990  1.0
  Bi  Bi1  2  0.0000  0.5000  0.5000  1.0
  C  C2  4  0.0039  0.0000  0.7396  1.0
  O  O3  8  0.0689  0.2075  0.7886  1.0
  O  O4  4  0.1134  0.0000  0.3514  1.0
]