data_[Na4Ga8Ag12]
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 [16.5952]
_cell_length_b [4.2288]
_cell_length_c [8.1462]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.3446]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaGa2Ag3]
_chemical_formula_sum '[Na4 Ga8 Ag12]'
_cell_volume [507.8019]
_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  0.1505  0.0000  0.0661  1.0
  Ga  Ga1  4  0.0138  0.5000  0.1618  1.0
  Ga  Ga2  4  0.1986  0.0000  0.6929  1.0
  Ag  Ag3  4  0.0357  0.0000  0.3681  1.0
  Ag  Ag4  4  0.0990  0.5000  0.6890  1.0
  Ag  Ag5  4  0.1809  0.5000  0.4404  1.0
]