data_[K4Na34Ag4]
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 [14.3491]
_cell_length_b [12.3938]
_cell_length_c [9.4343]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.8573]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Na17Ag2]
_chemical_formula_sum '[K4 Na34 Ag4]'
_cell_volume [1647.7717]
_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  0.1740  0.5000  0.3527  1
  Na  Na1  8  0.0897  0.2513  0.6597  1
  Na  Na2  8  0.1246  0.1439  0.2555  1
  Na  Na3  4  0.0000  0.3375  0.0000  1
  Na  Na4  4  0.1017  0.0000  0.9012  1
  Na  Na5  4  0.1636  0.5000  0.8265  1
  Na  Na6  4  0.2500  0.2500  0.0000  1
  Na  Na7  2  0.0000  0.0000  0.5000  1
  Ag  Ag8  4  0.2500  0.2500  0.5000  1
]