data_[Na12Cr9Ru3O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cr  1.6600  1.4000  0.9400
  Ru  2.2000  1.3000  0.6610
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.1296]
_cell_length_b [6.1296]
_cell_length_c [16.1008]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Na4Cr3RuO8]
_chemical_formula_sum '[Na12 Cr9 Ru3 O24]'
_cell_volume [523.8913]
_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  9  0.0000  0.5000  0.5000  1.0
  Na  Na1  3  -0.0000  -0.0000  0.5000  1.0
  Cr  Cr2  9  0.0000  0.5000  0.0000  1.0
  Ru  Ru3  3  0.0000  0.0000  0.0000  1.0
  O  O4  18  0.0074  0.5037  0.2665  1.0
  O  O5  6  0.0000  0.0000  0.2673  1.0
]