data_[K4Er2Cd4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Er  1.2400  1.7500  1.0300
  Cd  1.6900  1.5500  1.0900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.8069]
_cell_length_b [3.4523]
_cell_length_c [9.1376]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.4802]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2ErCd2O4]
_chemical_formula_sum '[K4 Er2 Cd4 O8]'
_cell_volume [340.8036]
_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  4  0.1565  0.5000  0.7912  1.0
  Er  Er1  2  0.0000  0.0000  0.0000  1.0
  Cd  Cd2  4  0.1549  0.5000  0.3590  1.0
  O  O3  4  0.0241  0.0000  0.2688  1.0
  O  O4  4  0.1402  0.5000  0.0968  1.0
]