data_[Rb2Na2V2F8]
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
  V  1.6300  1.3500  0.7775
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [4.1981]
_cell_length_b [4.1981]
_cell_length_c [13.1378]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [RbNaVF4]
_chemical_formula_sum '[Rb2 Na2 V2 F8]'
_cell_volume [231.5460]
_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  0.0000  0.6485  1.0
  Na  Na1  2  0.0000  0.0000  0.3564  1.0
  V  V2  2  0.0000  0.0000  0.0011  1.0
  F  F3  4  0.0000  0.5000  0.4911  1.0
  F  F4  2  0.0000  0.0000  0.1676  1.0
  F  F5  2  0.0000  0.0000  0.8442  1.0
]