data_[K4Zr8Se16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Zr  1.3300  1.5500  0.8600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.9801]
_cell_length_b [13.1241]
_cell_length_c [13.8267]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [K(ZrSe2)2]
_chemical_formula_sum '[K4 Zr8 Se16]'
_cell_volume [722.2351]
_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  4  0.0000  0.3916  0.2500  1.0
  Zr  Zr1  8  0.0000  0.1309  0.0648  1.0
  Se  Se2  8  0.0000  0.2332  0.6086  1.0
  Se  Se3  4  0.0000  0.0823  0.2500  1.0
  Se  Se4  4  0.0000  0.5000  0.0000  1.0
]