data_[Rb8Ta4F28]
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 [C2/c]
_cell_length_a [14.2402]
_cell_length_b [7.2078]
_cell_length_c [9.9671]
_cell_angle_alpha [90.0000]
_cell_angle_beta [129.8920]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb2TaF7]
_chemical_formula_sum '[Rb8 Ta4 F28]'
_cell_volume [784.9218]
_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  8  0.1842  0.4260  0.2733  1
  Ta  Ta1  4  0.0000  0.1136  0.7500  1
  F  F2  8  0.0955  0.1603  0.0010  1
  F  F3  8  0.1102  0.1070  0.3561  1
  F  F4  8  0.1363  0.1801  0.7528  1
  F  F5  4  0.0000  0.3947  0.7500  1
]