data_[K4Si4Ag4As8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Cmme]
_cell_length_a [6.1569]
_cell_length_b [13.5503]
_cell_length_c [6.8904]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [67]
_chemical_formula_structural [KSiAgAs2]
_chemical_formula_sum '[K4 Si4 Ag4 As8]'
_cell_volume [574.8487]
_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  0.2500  0.7784  1
  Si  Si1  4  0.2500  0.0000  0.0000  1
  Ag  Ag2  4  0.0000  0.0000  0.5000  1
  As  As3  8  0.0000  0.0969  0.1873  1
]