data_[K2Li4Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Li  0.9800  1.4500  0.9000
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [4.4558]
_cell_length_b [4.4558]
_cell_length_c [11.0179]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [K(LiCu)2]
_chemical_formula_sum '[K2 Li4 Cu4]'
_cell_volume [218.7478]
_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  0.0000  1
  Li  Li1  4  0.0000  0.5000  0.2500  1
  Cu  Cu2  4  0.0000  0.0000  0.3889  1
]