data_[Cs6K8Rb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.9126]
_cell_length_b [8.0365]
_cell_length_c [50.3699]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Cs3(KRb)4]
_chemical_formula_sum '[Cs6 K8 Rb8]'
_cell_volume [1988.6230]
_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
[
  Cs  Cs0  4  0.0000  0.5000  0.1383  1
  Cs  Cs1  2  0.0000  0.0000  0.0000  1
  Rb  Rb2  4  0.0000  0.0000  0.2665  1
  K  K3  4  0.0000  0.0000  0.4554  1
  K  K4  4  0.0000  0.5000  0.3162  1
  Rb  Rb5  4  0.0000  0.5000  0.4087  1
]