data_[Na2Ag6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [2.9808]
_cell_length_b [9.9362]
_cell_length_c [5.2679]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [NaAg3]
_chemical_formula_sum '[Na2 Ag6]'
_cell_volume [156.0264]
_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  0.0000  0.9958  1.0
  Ag  Ag1  4  0.0000  0.2404  0.3324  1.0
  Ag  Ag2  2  0.0000  0.5000  0.0061  1.0
]