data_[Rb4Na6O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.8543]
_cell_length_b [3.4758]
_cell_length_c [8.8498]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.7391]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Na3O2]
_chemical_formula_sum '[Rb4 Na6 O4]'
_cell_volume [359.3850]
_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  0.1912  0.0000  0.8264  1
  Na  Na1  4  0.0995  0.5000  0.3209  1
  Na  Na2  2  0.0000  0.5000  0.0000  1
  O  O3  4  0.1225  0.0000  0.1522  1
]