data_[Na2Ti4Bi4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ti  1.5400  1.4000  0.8517
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.3389]
_cell_length_b [19.0657]
_cell_length_c [5.5443]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [NaTi2Bi2O7]
_chemical_formula_sum '[Na2 Ti4 Bi4 O14]'
_cell_volume [352.9348]
_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  0.9232  1
  Ti  Ti1  4  0.0000  0.4073  0.9532  1
  Bi  Bi2  4  0.0000  0.3062  0.4720  1
  O  O3  4  0.0000  0.1161  0.5928  1
  O  O4  4  0.0000  0.2856  0.8576  1
  O  O5  4  0.0000  0.4187  0.6313  1
  O  O6  2  0.0000  0.5000  0.0633  1
]