data_[K4Y2As2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Y  1.2200  1.8000  1.0400
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [5.2398]
_cell_length_b [5.2398]
_cell_length_c [9.0430]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [K2YAs]
_chemical_formula_sum '[K4 Y2 As2]'
_cell_volume [248.2757]
_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  0.0000  0.0000  0.0000  1
  K  K1  2  0.0000  0.5000  0.7500  1
  Y  Y2  2  0.0000  0.0000  0.5000  1
  As  As3  2  0.0000  0.5000  0.2500  1
]