data_[Na4Gd4Ti6O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Gd  1.2000  1.8000  1.0750
  Ti  1.5400  1.4000  0.8517
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [3.8305]
_cell_length_b [3.8305]
_cell_length_c [28.6625]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Na2Gd2Ti3O10]
_chemical_formula_sum '[Na4 Gd4 Ti6 O20]'
_cell_volume [420.5578]
_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  4  0.0000  0.0000  0.2877  1.0
  Gd  Gd1  4  0.0000  0.0000  0.4243  1.0
  Ti  Ti2  4  0.0000  0.0000  0.1457  1.0
  Ti  Ti3  2  0.0000  0.0000  0.0000  1.0
  O  O4  8  0.0000  0.5000  0.1303  1.0
  O  O5  4  0.0000  0.0000  0.0674  1.0
  O  O6  4  0.0000  0.0000  0.2073  1.0
  O  O7  4  0.0000  0.5000  0.0000  1.0
]