data_[K6Na8Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.1980]
_cell_length_b [4.8781]
_cell_length_c [10.1557]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.3780]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K3(Na2Ag)2]
_chemical_formula_sum '[K6 Na8 Ag4]'
_cell_volume [725.0182]
_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  4  0.1335  0.5000  0.3807  1.0
  K  K1  2  0.0000  0.0000  0.0000  1.0
  Na  Na2  4  0.1141  0.0000  0.6858  1.0
  Na  Na3  4  0.1791  0.5000  0.0040  1.0
  Ag  Ag4  4  0.2420  0.0000  0.2308  1.0
]