data_[K2Cu2Ir2Se6]
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
  Ir  2.2000  1.3500  0.7650
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.3169]
_cell_length_b [3.8986]
_cell_length_c [9.4484]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.5538]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KCuIrSe3]
_chemical_formula_sum '[K2 Cu2 Ir2 Se6]'
_cell_volume [284.9367]
_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  0.2303  0.2500  0.2615  1.0
  Cu  Cu1  2  0.0744  0.2500  0.5918  1.0
  Ir  Ir2  2  0.3202  0.7500  0.8498  1.0
  Se  Se3  2  0.1283  0.2500  0.8617  1.0
  Se  Se4  2  0.2371  0.7500  0.5594  1.0
  Se  Se5  2  0.4773  0.7500  0.1319  1.0
]