data_[Rb4Pb4Br8Cl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Pb  2.3300  1.8000  1.1225
  Br  2.9600  1.1500  0.8825
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [I4/mcm]
_cell_length_a [8.2596]
_cell_length_b [8.2596]
_cell_length_c [11.4918]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [RbPbBr2Cl]
_chemical_formula_sum '[Rb4 Pb4 Br8 Cl4]'
_cell_volume [783.9759]
_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  0.5000  0.2500  1
  Pb  Pb1  4  0.0000  0.0000  0.0000  1
  Br  Br2  8  0.1795  0.3205  0.5000  1
  Cl  Cl3  4  0.0000  0.0000  0.2500  1
]