data_[Rb4N4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  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 [9.7937]
_cell_length_b [9.2370]
_cell_length_c [4.6475]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.3070]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2N2O7]
_chemical_formula_sum '[Rb4 N4 O14]'
_cell_volume [409.1478]
_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  0.2248  0.0000  1
  N  N1  4  0.1779  0.5000  0.5798  1
  O  O2  8  0.2121  0.3813  0.7126  1
  O  O3  4  0.1090  0.5000  0.3148  1
  O  O4  2  0.0000  0.0000  0.5000  1
]