data_[Rb4Cu4Sb4Br20]
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
  Sb  2.0500  1.4500  0.8300
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.4567]
_cell_length_b [12.6037]
_cell_length_c [10.6724]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.5362]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbCuSbBr5]
_chemical_formula_sum '[Rb4 Cu4 Sb4 Br20]'
_cell_volume [1166.2127]
_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  0.3514  0.2500  1.0
  Cu  Cu1  4  0.0000  0.3038  0.7500  1.0
  Sb  Sb2  4  0.0000  0.0000  0.0000  1.0
  Br  Br3  8  0.1050  0.2085  0.6062  1.0
  Br  Br4  8  0.1901  0.4251  0.9228  1.0
  Br  Br5  4  0.0000  0.0765  0.2500  1.0
]