data_[K4Rb8Sb8]
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
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [12.9470]
_cell_length_b [7.0937]
_cell_length_c [10.3819]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.6655]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [K(RbSb)2]
_chemical_formula_sum '[K4 Rb8 Sb8]'
_cell_volume [926.5046]
_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  8  0.1523  0.3410  0.1487  1.0
  K  K1  4  0.0000  0.1327  0.7500  1.0
  Sb  Sb2  8  0.1511  0.1657  0.5008  1.0
]