data_[Rb12Co4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Co  1.8800  1.3500  0.7683
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [12.3187]
_cell_length_b [7.6695]
_cell_length_c [6.1836]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Rb3CoO2]
_chemical_formula_sum '[Rb12 Co4 O8]'
_cell_volume [584.2138]
_cell_formula_units_Z [4]
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  8  0.1376  0.5009  0.8178  1
  Rb  Rb1  4  0.1007  0.7500  0.2806  1
  Co  Co2  4  0.1185  0.2500  0.3064  1
  O  O3  4  0.0290  0.2500  0.0870  1
  O  O4  4  0.2144  0.2500  0.5158  1
]