data_[Rb8Na4Pb4Br20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Pb  2.3300  1.8000  1.1225
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.6494]
_cell_length_b [19.5055]
_cell_length_c [15.2747]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Rb2NaPbBr5]
_chemical_formula_sum '[Rb8 Na4 Pb4 Br20]'
_cell_volume [1385.2605]
_cell_formula_units_Z [4]
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  0.0000  0.0903  0.6651  1.0
  Rb  Rb1  4  0.0000  0.1301  0.3019  1.0
  Na  Na2  4  0.0000  0.4576  0.4508  1.0
  Pb  Pb3  4  0.0000  0.2217  0.0246  1.0
  Br  Br4  4  0.0000  0.0685  0.0537  1.0
  Br  Br5  4  0.0000  0.2690  0.6620  1.0
  Br  Br6  4  0.0000  0.3014  0.3956  1.0
  Br  Br7  4  0.0000  0.3761  0.9934  1.0
  Br  Br8  4  0.0000  0.4989  0.7769  1.0
]