data_[K4Na4Cr8O24]
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
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.8569]
_cell_length_b [11.5056]
_cell_length_c [5.1553]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.4496]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KNaCr2O6]
_chemical_formula_sum '[K4 Na4 Cr8 O24]'
_cell_volume [642.0318]
_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  0.0000  0.1104  0.7500  1
  Na  Na1  4  0.0000  0.3274  0.2500  1
  Cr  Cr2  8  0.2117  0.4151  0.7674  1
  O  O3  8  0.1221  0.3100  0.6459  1
  O  O4  8  0.1367  0.1036  0.2232  1
  O  O5  8  0.1693  0.4497  0.0976  1
]