data_[Na3Nb3In6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Nb  1.6000  1.4500  0.8200
  In  1.7800  1.5500  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.5558]
_cell_length_b [5.5558]
_cell_length_c [14.8820]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NaNbIn2O6]
_chemical_formula_sum '[Na3 Nb3 In6 O18]'
_cell_volume [397.8215]
_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  0.1998  1.0
  Nb  Nb1  3  0.0000  0.0000  0.6863  1.0
  In  In2  3  0.0000  0.0000  0.4788  1.0
  In  In3  3  0.0000  0.0000  0.9774  1.0
  O  O4  9  0.0045  0.3537  0.4101  1.0
  O  O5  9  0.0272  0.7409  0.5886  1.0
]