data_[Na2Bi2Te2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  Te  2.1000  1.4000  1.2933
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4_2nm]
_cell_length_a [4.9653]
_cell_length_b [4.9653]
_cell_length_c [9.7462]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [102]
_chemical_formula_structural [NaBiTeO6]
_chemical_formula_sum '[Na2 Bi2 Te2 O12]'
_cell_volume [240.2876]
_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  0.6673  1.0
  Bi  Bi1  2  0.0000  0.0000  0.9973  1.0
  Te  Te2  2  0.0000  0.0000  0.3347  1.0
  O  O3  4  0.1819  0.8181  0.1800  1.0
  O  O4  4  0.1919  0.8081  0.4809  1.0
  O  O5  4  0.2188  0.7812  0.8395  1.0
]