data_[Rb4Cu4Br10]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.6149]
_cell_length_b [5.2400]
_cell_length_c [8.3105]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.6422]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Cu2Br5]
_chemical_formula_sum '[Rb4 Cu4 Br10]'
_cell_volume [582.6931]
_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  0.0953  0.5000  0.2957  1
  Cu  Cu1  4  0.1645  0.0000  0.8793  1
  Br  Br2  4  0.1403  0.0000  0.5861  1
  Br  Br3  4  0.1868  0.5000  0.9003  1
  Br  Br4  2  0.0000  0.0000  0.0000  1
]