data_[Rb2Bi1Pb1Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [7.2811]
_cell_length_b [9.0005]
_cell_length_c [7.8100]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.4383]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Rb2BiPbBr8]
_chemical_formula_sum '[Rb2 Bi1 Pb1 Br8]'
_cell_volume [510.9000]
_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  2  0.5000  0.2479  0.5000  1.0
  Bi  Bi1  1  0.0000  0.0000  0.0000  1.0
  Pb  Pb2  1  0.0000  0.5000  0.0000  1.0
  Br  Br3  4  0.2321  0.2459  0.8865  1.0
  Br  Br4  2  0.1890  0.5000  0.3255  1.0
  Br  Br5  2  0.2010  0.0000  0.3212  1.0
]