data_[Na2Ga4Ag16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ga  1.8100  1.3000  0.7600
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.7556]
_cell_length_b [4.2216]
_cell_length_c [6.6984]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.5104]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na(GaAg4)2]
_chemical_formula_sum '[Na2 Ga4 Ag16]'
_cell_volume [397.9239]
_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
[
  Na  Na0  2  0.0000  0.5000  0.0000  1.0
  Ga  Ga1  4  0.2253  0.0000  0.6448  1.0
  Ag  Ag2  4  0.0481  0.0000  0.7262  1.0
  Ag  Ag3  4  0.0958  0.5000  0.4671  1.0
  Ag  Ag4  4  0.1436  0.0000  0.2064  1.0
  Ag  Ag5  4  0.1837  0.5000  0.9239  1.0
]