data_[Na2Li6Nb8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Li  0.9800  1.4500  0.9000
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Im-3]
_cell_length_a [7.6680]
_cell_length_b [7.6680]
_cell_length_c [7.6680]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [204]
_chemical_formula_structural [NaLi3Nb4O12]
_chemical_formula_sum '[Na2 Li6 Nb8 O24]'
_cell_volume [450.8734]
_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  0.0000  1.0
  Li  Li1  6  0.0000  0.0000  0.5000  1.0
  Nb  Nb2  8  0.2500  0.2500  0.2500  1.0
  O  O3  24  0.0000  0.1883  0.3001  1.0
]