data_[Rb4Np4Pb4Br24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Np  1.3600  1.7500  1.0000
  Pb  2.3300  1.8000  1.1225
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [10.4992]
_cell_length_b [10.9420]
_cell_length_c [15.2665]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [RbNpPbBr6]
_chemical_formula_sum '[Rb4 Np4 Pb4 Br24]'
_cell_volume [1753.8521]
_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  0.2500  0.5672  1
  Np  Np1  4  0.0000  0.0000  0.0000  1
  Pb  Pb2  4  0.2500  0.2500  0.2500  1
  Br  Br3  16  0.2040  0.0364  0.1232  1
  Br  Br4  4  0.0000  0.2500  0.3462  1
  Br  Br5  4  0.0000  0.2500  0.9387  1
]