data_[Rb4Na2Pb2Br12]
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 [Pmmn]
_cell_length_a [8.0089]
_cell_length_b [11.5904]
_cell_length_c [8.4877]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Rb2NaPbBr6]
_chemical_formula_sum '[Rb4 Na2 Pb2 Br12]'
_cell_volume [787.8869]
_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  0.0000  0.2785  0.2019  1.0
  Na  Na1  2  0.0000  0.5000  0.7262  1.0
  Pb  Pb2  2  0.0000  0.0000  0.7664  1.0
  Br  Br3  4  0.0000  0.2492  0.7789  1.0
  Br  Br4  4  0.2241  0.5000  0.4501  1.0
  Br  Br5  4  0.2476  0.0000  0.0165  1.0
]