data_[K6Rb3Ce3I18]
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
  Ce  1.1200  1.8500  1.0800
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [8.8474]
_cell_length_b [8.8474]
_cell_length_c [23.4220]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [K2RbCeI6]
_chemical_formula_sum '[K6 Rb3 Ce3 I18]'
_cell_volume [1587.7538]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.0132  1.0
  K  K1  3  0.0000  0.0000  0.5245  1.0
  Rb  Rb2  3  0.0000  0.0000  0.8147  1.0
  Ce  Ce3  3  0.0000  0.0000  0.3251  1.0
  I  I4  9  0.0490  0.3503  0.9187  1.0
  I  I5  9  0.0537  0.6684  0.0761  1.0
]