data_[Rb4I4N2O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  I  2.6600  1.4000  1.2733
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.4539]
_cell_length_b [5.7003]
_cell_length_c [7.4242]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.0864]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2I2NO2]
_chemical_formula_sum '[Rb4 I4 N2 O4]'
_cell_volume [526.7036]
_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  0.1576  0.5000  0.2460  1
  I  I1  4  0.1462  0.5000  0.7504  1
  N  N2  2  0.0000  0.0000  0.5000  1
  O  O3  4  0.0653  0.0000  0.3829  1
]