data_[Rb4Tb4F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tb  1.1000  1.7500  0.9815
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [6.2712]
_cell_length_b [3.6679]
_cell_length_c [16.1777]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [RbTbF4]
_chemical_formula_sum '[Rb4 Tb4 F16]'
_cell_volume [372.1232]
_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  0.2269  0.2500  0.8002  1
  Tb  Tb1  4  0.2492  0.7500  0.5555  1
  F  F2  4  0.0012  0.2500  0.9467  1
  F  F3  4  0.1020  0.2500  0.1804  1
  F  F4  4  0.1134  0.2500  0.6245  1
  F  F5  4  0.1307  0.2500  0.4639  1
]