data_[Rb8Cu4Br8Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cu  1.9000  1.3500  0.8200
  Br  2.9600  1.1500  0.8825
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Fmmm]
_cell_length_a [8.9573]
_cell_length_b [10.2050]
_cell_length_c [11.1935]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [Rb2Cu(BrCl)2]
_chemical_formula_sum '[Rb8 Cu4 Br8 Cl8]'
_cell_volume [1023.1919]
_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  0.2500  0.2500  0.2500  1
  Cu  Cu1  4  0.0000  0.0000  0.0000  1
  Br  Br2  8  0.0000  0.2422  0.0000  1
  Cl  Cl3  8  0.0000  0.0000  0.2031  1
]