data_[K4Rb4Sb4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.4877]
_cell_length_b [12.7677]
_cell_length_c [6.0982]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.6474]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KRbSbO3]
_chemical_formula_sum '[K4 Rb4 Sb4 O12]'
_cell_volume [499.3939]
_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
[
  Rb  Rb0  4  0.0000  0.2450  0.7500  1
  K  K1  4  0.0000  0.4162  0.2500  1
  Sb  Sb2  4  0.0000  0.0554  0.2500  1
  O  O3  8  0.1952  0.0312  0.9935  1
  O  O4  4  0.0000  0.2101  0.2500  1
]