data_[Rb3Ba9Cu12Br36]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ba  0.8900  2.1500  1.4900
  Cu  1.9000  1.3500  0.8200
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [R32]
_cell_length_a [15.5057]
_cell_length_b [15.5057]
_cell_length_c [12.3036]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [155]
_chemical_formula_structural [RbBa3(CuBr3)4]
_chemical_formula_sum '[Rb3 Ba9 Cu12 Br36]'
_cell_volume [2561.8082]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.0000  1.0
  Ba  Ba1  9  0.0000  0.5419  0.0000  1.0
  Cu  Cu2  9  0.0000  0.4468  0.5000  1.0
  Cu  Cu3  3  0.0000  0.0000  0.5000  1.0
  Br  Br4  18  0.0211  0.1913  0.1814  1.0
  Br  Br5  9  0.0000  0.6038  0.5000  1.0
  Br  Br6  9  0.0000  0.8484  0.5000  1.0
]