data_[Rb2Li2Ca2F8]
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
  Ca  1.0000  1.8000  1.1400
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.6674]
_cell_length_b [5.7303]
_cell_length_c [7.5960]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.9232]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbLiCaF4]
_chemical_formula_sum '[Rb2 Li2 Ca2 F8]'
_cell_volume [231.9206]
_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  0.2918  0.2500  0.0671  1.0
  Li  Li1  2  0.2383  0.7500  0.3248  1.0
  Ca  Ca2  2  0.2111  0.2500  0.5449  1.0
  F  F3  4  0.0080  0.5114  0.3106  1.0
  F  F4  2  0.4439  0.7500  0.1818  1.0
  F  F5  2  0.4639  0.7500  0.5620  1.0
]