data_[Na6Sr2Ta8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Ta  1.5000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [7.9721]
_cell_length_b [7.9155]
_cell_length_c [7.9688]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Na3SrTa4O12]
_chemical_formula_sum '[Na6 Sr2 Ta8 O24]'
_cell_volume [502.8589]
_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
[
  Na  Na0  2  0.0000  0.0000  0.0076  1.0
  Na  Na1  2  0.5000  0.0000  0.4993  1.0
  Na  Na2  2  0.5000  0.0000  0.9944  1.0
  Sr  Sr3  2  0.0000  0.0000  0.5072  1.0
  Ta  Ta4  8  0.2532  0.2492  0.2507  1.0
  O  O5  8  0.2513  0.2171  0.5002  1.0
  O  O6  4  0.0000  0.2180  0.2474  1.0
  O  O7  4  0.2153  0.0000  0.7768  1.0
  O  O8  4  0.2800  0.0000  0.2219  1.0
  O  O9  4  0.5000  0.2171  0.7532  1.0
]