data_[K2Rb4Ce2F12]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I4/m]
_cell_length_a [6.2833]
_cell_length_b [6.2833]
_cell_length_c [9.5039]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [KRb2CeF6]
_chemical_formula_sum '[K2 Rb4 Ce2 F12]'
_cell_volume [375.2113]
_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  0.5000  0.2500  1
  K  K1  2  0.0000  0.0000  0.5000  1
  Ce  Ce2  2  0.0000  0.0000  0.0000  1
  F  F3  8  0.1489  0.3308  0.0000  1
  F  F4  4  0.0000  0.0000  0.2418  1
]