data_[Rb8Np4I20]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [15.0715]
_cell_length_b [10.0674]
_cell_length_c [9.4314]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Rb2NpI5]
_chemical_formula_sum '[Rb8 Np4 I20]'
_cell_volume [1431.0368]
_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  8  0.1716  0.5065  0.4338  1
  Np  Np1  4  0.0021  0.7500  0.9280  1
  I  I2  8  0.0722  0.0437  0.8368  1
  I  I3  4  0.0088  0.7500  0.5849  1
  I  I4  4  0.1793  0.7500  0.1107  1
  I  I5  4  0.2014  0.2500  0.1536  1
]