data_[K2Rb2Cd8]
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
  Cd  1.6900  1.5500  1.0900
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [5.2751]
_cell_length_b [8.5064]
_cell_length_c [8.8262]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [KRbCd4]
_chemical_formula_sum '[K2 Rb2 Cd8]'
_cell_volume [396.0549]
_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
[
  K  K0  2  0.0000  0.0000  0.4415  1
  Rb  Rb1  2  0.0000  0.5000  0.5624  1
  Cd  Cd2  4  0.0000  0.1820  0.8367  1
  Cd  Cd3  4  0.0000  0.3197  0.1614  1
]