data_[Na3Dy6Ta3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Dy  1.2200  1.7500  1.1310
  Ta  1.5000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.6763]
_cell_length_b [5.6763]
_cell_length_c [15.0633]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NaDy2TaO6]
_chemical_formula_sum '[Na3 Dy6 Ta3 O18]'
_cell_volume [420.3164]
_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
[
  Na  Na0  3  0.0000  0.0000  0.7988  1.0
  Dy  Dy1  3  0.0000  0.0000  0.0209  1.0
  Dy  Dy2  3  0.0000  0.0000  0.5245  1.0
  Ta  Ta3  3  0.0000  0.0000  0.3183  1.0
  O  O4  9  0.0401  0.3480  0.9228  1.0
  O  O5  9  0.0723  0.6848  0.0769  1.0
]