data_[Na6Ag4Ir2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.0583]
_cell_length_b [9.8839]
_cell_length_c [5.7214]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.3181]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Ag2IrO6]
_chemical_formula_sum '[Na6 Ag4 Ir2 O12]'
_cell_volume [312.1996]
_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  4  0.0000  0.1742  0.5000  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Ag  Ag2  4  0.0000  0.3317  0.0000  1.0
  Ir  Ir3  2  0.0000  0.0000  0.0000  1.0
  O  O4  8  0.2039  0.1437  0.2286  1.0
  O  O5  4  0.2124  0.0000  0.8212  1.0
]