data_[K2Dy2Si2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Dy  1.2200  1.7500  1.1310
  Si  1.9000  1.1000  0.5400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.6902]
_cell_length_b [6.9723]
_cell_length_c [9.1113]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.5955]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KDySiSe4]
_chemical_formula_sum '[K2 Dy2 Si2 Se8]'
_cell_volume [405.1223]
_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  0.2533  0.2500  0.0606  1.0
  Dy  Dy1  2  0.2279  0.2500  0.5514  1.0
  Si  Si2  2  0.2240  0.7500  0.3287  1.0
  Se  Se3  4  0.0059  0.5040  0.7119  1.0
  Se  Se4  2  0.4224  0.7500  0.1667  1.0
  Se  Se5  2  0.4279  0.7500  0.5785  1.0
]