data_[K6Cu2O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Cu  1.9000  1.3500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [6.5597]
_cell_length_b [8.8993]
_cell_length_c [18.1270]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [K3CuO2]
_chemical_formula_sum '[K6 Cu2 O4]'
_cell_volume [1058.1932]
_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  0.0583  0.8376  0.5863  1
  K  K1  2  0.0000  0.4932  0.5000  1
  Cu  Cu2  2  0.0000  0.1739  0.5000  1
  O  O3  4  0.2437  0.7046  0.4678  1
]