data_[Rb4Li2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Li  0.9800  1.4500  0.9000
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.1591]
_cell_length_b [5.6717]
_cell_length_c [8.0839]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.3959]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Rb2LiF4]
_chemical_formula_sum '[Rb4 Li2 F8]'
_cell_volume [267.9562]
_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  0.2955  0.2500  0.0173  1.0
  Rb  Rb1  2  0.3348  0.7500  0.3844  1.0
  Li  Li2  2  0.1035  0.7500  0.7689  1.0
  F  F3  4  0.3135  0.5475  0.7108  1.0
  F  F4  2  0.1791  0.7500  0.0093  1.0
  F  F5  2  0.2033  0.2500  0.3349  1.0
]