data_[Rb3Ta3F18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ta  1.5000  1.4500  0.8200
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.7142]
_cell_length_b [5.7142]
_cell_length_c [15.9134]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [RbTaF6]
_chemical_formula_sum '[Rb3 Ta3 F18]'
_cell_volume [449.9966]
_cell_formula_units_Z [3]
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  3  -0.0000  -0.0000  0.5000  1
  Ta  Ta1  3  0.0000  0.0000  0.0000  1
  F  F2  18  0.0173  0.5086  0.5960  1
]