data_[Rb6Ag2Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ag  1.9300  1.6000  1.0867
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [11.4170]
_cell_length_b [9.3626]
_cell_length_c [6.9754]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Rb3AgBr4]
_chemical_formula_sum '[Rb6 Ag2 Br8]'
_cell_volume [745.6311]
_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  0.2327  0.6694  0.0689  1.0
  Rb  Rb1  2  0.0000  0.8688  0.5655  1.0
  Ag  Ag2  2  0.0000  0.1911  0.9964  1.0
  Br  Br3  4  0.2226  0.3032  0.0733  1.0
  Br  Br4  2  0.0000  0.2178  0.6012  1.0
  Br  Br5  2  0.0000  0.8949  0.0677  1.0
]