data_[Rb4Na4Fe4O12]
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
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [5.8402]
_cell_length_b [11.3478]
_cell_length_c [5.4928]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.6265]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbNaFeO3]
_chemical_formula_sum '[Rb4 Na4 Fe4 O12]'
_cell_volume [362.2728]
_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  4  0.0000  0.2586  0.2500  1.0
  Na  Na1  4  0.0000  0.4207  0.7500  1.0
  Fe  Fe2  4  0.0000  0.0521  0.7500  1.0
  O  O3  8  0.2106  0.0295  0.5088  1.0
  O  O4  4  0.0000  0.2099  0.7500  1.0
]