data_[Rb6Ac4Fe2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ac  1.1000  1.9500  1.2600
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.3156]
_cell_length_b [10.9489]
_cell_length_c [6.9077]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.4230]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3Ac2FeO6]
_chemical_formula_sum '[Rb6 Ac4 Fe2 O12]'
_cell_volume [455.7416]
_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  0.0000  0.1579  0.5000  1
  Rb  Rb1  2  0.0000  0.5000  0.5000  1
  Ac  Ac2  4  0.0000  0.3329  0.0000  1
  Fe  Fe3  2  0.0000  0.0000  0.0000  1
  O  O4  8  0.2052  0.1462  0.1776  1
  O  O5  4  0.2366  0.0000  0.8214  1
]