data_[Sr2Ta4Ag4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ta  1.5000  1.4500  0.8200
  Ag  1.9300  1.6000  1.0867
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.9825]
_cell_length_b [4.0001]
_cell_length_c [21.7318]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [SrTa2Ag2O7]
_chemical_formula_sum '[Sr2 Ta4 Ag4 O14]'
_cell_volume [346.2022]
_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
[
  Sr  Sr0  2  0.0000  0.5000  0.0000  1
  Ta  Ta1  4  0.0000  0.5000  0.4039  1
  Ag  Ag2  4  0.0000  0.0000  0.2642  1
  O  O3  4  0.0000  0.0000  0.0865  1
  O  O4  4  0.0000  0.0000  0.4127  1
  O  O5  4  0.0000  0.5000  0.3153  1
  O  O6  2  0.0000  0.5000  0.5000  1
]