data_[Rb4Zn2Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Zn  1.6500  1.3500  0.8800
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.4440]
_cell_length_b [7.6158]
_cell_length_c [9.9031]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.3450]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Rb2ZnBr4]
_chemical_formula_sum '[Rb4 Zn2 Br8]'
_cell_volume [529.7256]
_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  2  0.2030  0.2500  0.5397  1
  Rb  Rb1  2  0.2927  0.2500  0.0827  1
  Zn  Zn2  2  0.2051  0.7500  0.2867  1
  Br  Br3  4  0.0107  0.5012  0.7741  1
  Br  Br4  2  0.3677  0.7500  0.5452  1
  Br  Br5  2  0.4173  0.7500  0.1463  1
]