data_[K4Na4Ir4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  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 [13.5903]
_cell_length_b [3.8586]
_cell_length_c [7.0866]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.7080]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KNaIrO3]
_chemical_formula_sum '[K4 Na4 Ir4 O12]'
_cell_volume [359.4353]
_cell_formula_units_Z [4]
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
[
  K  K0  4  0.1502  0.5000  0.0755  1.0
  Na  Na1  4  0.1727  0.5000  0.5805  1.0
  Ir  Ir2  4  0.0000  0.0000  0.6734  1.0
  O  O3  4  0.0000  0.5000  0.7134  1.0
  O  O4  4  0.1446  0.0000  0.7840  1.0
  O  O5  4  0.1448  0.0000  0.3569  1.0
]