data_[Rb2Na4F6]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.3547]
_cell_length_b [9.6655]
_cell_length_c [6.0598]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [RbNa2F3]
_chemical_formula_sum '[Rb2 Na4 F6]'
_cell_volume [196.4860]
_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  2  0.0000  0.1334  0.5065  1.0
  Na  Na1  2  0.0000  0.2406  0.0083  1.0
  Na  Na2  2  0.5000  0.4820  0.5140  1.0
  F  F3  2  0.0000  0.4094  0.2604  1.0
  F  F4  2  0.5000  0.0922  0.1383  1.0
  F  F5  2  0.5000  0.3070  0.7738  1.0
]