data_[K8Ti4As4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ti  1.5400  1.4000  0.8517
  As  2.1800  1.1500  0.6600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.1686]
_cell_length_b [19.4504]
_cell_length_c [13.5646]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [K2TiAsSe5]
_chemical_formula_sum '[K8 Ti4 As4 Se20]'
_cell_volume [1099.8282]
_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  0.1202  0.3226  1.0
  K  K1  4  0.0000  0.1353  0.6870  1.0
  Ti  Ti2  4  0.0000  0.2071  0.0374  1.0
  As  As3  4  0.0000  0.4314  0.4271  1.0
  Se  Se4  4  0.0000  0.0597  0.0254  1.0
  Se  Se5  4  0.0000  0.3071  0.6486  1.0
  Se  Se6  4  0.0000  0.3091  0.3966  1.0
  Se  Se7  4  0.0000  0.3248  0.0020  1.0
  Se  Se8  4  0.0000  0.4886  0.2772  1.0
]