data_[K8Na4Li4Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Li  0.9800  1.4500  0.9000
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [6.6510]
_cell_length_b [15.0061]
_cell_length_c [6.5743]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [K2NaLiSe2]
_chemical_formula_sum '[K8 Na4 Li4 Se8]'
_cell_volume [656.1550]
_cell_formula_units_Z [4]
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  8  0.2466  0.3271  0.5000  1.0
  Na  Na1  4  0.0000  0.0000  0.2500  1.0
  Li  Li2  4  0.0000  0.5000  0.2500  1.0
  Se  Se3  8  0.2284  0.6030  0.5000  1.0
]