data_[K2Rb4Sb12]
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 [Immm]
_cell_length_a [4.3553]
_cell_length_b [12.5167]
_cell_length_c [13.0182]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [K(RbSb3)2]
_chemical_formula_sum '[K2 Rb4 Sb12]'
_cell_volume [709.6671]
_cell_formula_units_Z [2]
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  0.0000  0.3348  1
  K  K1  2  0.0000  0.0000  0.0000  1
  Sb  Sb2  8  0.0000  0.2465  0.1663  1
  Sb  Sb3  4  0.0000  0.2580  0.5000  1
]