data_[Rb1Cu2Sb1Br8]
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 [P-1]
_cell_length_a [7.0718]
_cell_length_b [7.1717]
_cell_length_c [9.4098]
_cell_angle_alpha [109.3489]
_cell_angle_beta [94.4614]
_cell_angle_gamma [111.0591]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbCu2SbBr8]
_chemical_formula_sum '[Rb1 Cu2 Sb1 Br8]'
_cell_volume [409.5679]
_cell_formula_units_Z [1]
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  1  0.0000  0.5000  0.5000  1.0
  Cu  Cu1  2  0.4343  0.8268  0.2964  1.0
  Sb  Sb2  1  0.0000  0.0000  0.0000  1.0
  Br  Br3  2  0.1706  0.0526  0.7517  1.0
  Br  Br4  2  0.2675  0.8090  0.0541  1.0
  Br  Br5  2  0.2813  0.4138  0.1918  1.0
  Br  Br6  2  0.4541  0.1933  0.4607  1.0
]