data_[Na4Be8Ir4O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Be  1.5700  1.0500  0.5900
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.5545]
_cell_length_b [8.9945]
_cell_length_c [5.4923]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.5902]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaBe2IrO6]
_chemical_formula_sum '[Na4 Be8 Ir4 O24]'
_cell_volume [438.8853]
_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
[
  Na  Na0  4  0.0000  0.0921  0.2500  1
  Be  Be1  8  0.1970  0.4350  0.1292  1
  Ir  Ir2  4  0.0000  0.2746  0.7500  1
  O  O3  8  0.0844  0.2959  0.1117  1
  O  O4  8  0.1314  0.1221  0.7216  1
  O  O5  8  0.1591  0.4372  0.8056  1
]