data_[Na12Ag3P6]
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
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [4.8960]
_cell_length_b [4.8960]
_cell_length_c [25.8967]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Na4AgP2]
_chemical_formula_sum '[Na12 Ag3 P6]'
_cell_volume [537.5960]
_cell_formula_units_Z [3]
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  6  0.0000  0.0000  0.2050  1.0
  Na  Na1  6  0.0000  0.0000  0.3904  1.0
  Ag  Ag2  3  0.0000  0.0000  0.0000  1.0
  P  P3  6  0.0000  0.0000  0.0914  1.0
]