data_[Na8Mg4Ag4F20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Ag  1.9300  1.6000  1.0867
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.1172]
_cell_length_b [14.5672]
_cell_length_c [11.1205]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na2MgAgF5]
_chemical_formula_sum '[Na8 Mg4 Ag4 F20]'
_cell_volume [504.9716]
_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
[
  Na  Na0  4  0.0000  0.1001  0.2760  1.0
  Na  Na1  4  0.0000  0.1281  0.7729  1.0
  Mg  Mg2  4  0.0000  0.2478  0.0054  1.0
  Ag  Ag3  4  0.0000  0.4989  0.0279  1.0
  F  F4  4  0.0000  0.1214  0.0744  1.0
  F  F5  4  0.0000  0.2149  0.6096  1.0
  F  F6  4  0.0000  0.2921  0.3905  1.0
  F  F7  4  0.0000  0.3685  0.9194  1.0
  F  F8  4  0.0000  0.4821  0.2479  1.0
]