data_[Rb4Na4Tb4F20]
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
  Tb  1.1000  1.7500  0.9815
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.5900]
_cell_length_b [10.8500]
_cell_length_c [8.5053]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.8424]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbNaTbF5]
_chemical_formula_sum '[Rb4 Na4 Tb4 F20]'
_cell_volume [654.5924]
_cell_formula_units_Z [4]
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  4  0.0000  0.3344  0.2500  1.0
  Na  Na1  4  0.0000  0.3181  0.7500  1.0
  Tb  Tb2  4  0.0000  0.0000  0.0000  1.0
  F  F3  8  0.0915  0.1875  0.5924  1.0
  F  F4  8  0.2020  0.4478  0.9233  1.0
  F  F5  4  0.0000  0.0637  0.2500  1.0
]