data_[Rb7Na1O3]
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 [P3m1]
_cell_length_a [8.2572]
_cell_length_b [8.2572]
_cell_length_c [7.8967]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [156]
_chemical_formula_structural [Rb7NaO3]
_chemical_formula_sum '[Rb7 Na1 O3]'
_cell_volume [466.2696]
_cell_formula_units_Z [1]
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  3  0.1555  0.8445  0.0296  1
  Rb  Rb1  3  0.5122  0.0243  0.4155  1
  Rb  Rb2  1  0.6667  0.3333  0.0439  1
  Na  Na3  1  0.0000  0.0000  0.3308  1
  O  O4  3  0.3202  0.1601  0.2249  1
]