data_[K4U2Cu2S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  U  1.3800  1.7500  0.9913
  Cu  1.9000  1.3500  0.8200
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [7.2227]
_cell_length_b [7.2227]
_cell_length_c [8.6609]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [K2UCuS4]
_chemical_formula_sum '[K4 U2 Cu2 S8]'
_cell_volume [451.8141]
_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
  K  K1  2  0.0000  0.5000  0.2500  1
  U  U2  2  0.0000  0.5000  0.7500  1
  Cu  Cu3  2  0.0000  0.0000  0.5000  1
  S  S4  8  0.1682  0.2436  0.6110  1
]