data_[Rb6Ac6Cu2O16]
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
  Cu  1.9000  1.3500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.4436]
_cell_length_b [7.1906]
_cell_length_c [7.7690]
_cell_angle_alpha [90.0000]
_cell_angle_beta [121.3954]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3Ac3CuO8]
_chemical_formula_sum '[Rb6 Ac6 Cu2 O16]'
_cell_volume [641.0482]
_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  0.2500  0.2500  0.0000  1
  Rb  Rb1  2  0.0000  0.0000  0.0000  1
  Ac  Ac2  4  0.2500  0.2500  0.5000  1
  Ac  Ac3  2  0.0000  0.5000  0.5000  1
  Cu  Cu4  2  0.0000  0.0000  0.5000  1
  O  O5  8  0.0298  0.1928  0.3629  1
  O  O6  4  0.2044  0.5000  0.2634  1
  O  O7  4  0.2189  0.5000  0.6919  1
]