data_[Na6Ag3Ge3Br18]
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
  Ge  2.0100  1.2500  0.7700
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.2606]
_cell_length_b [7.2606]
_cell_length_c [19.2556]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Na2AgGeBr6]
_chemical_formula_sum '[Na6 Ag3 Ge3 Br18]'
_cell_volume [879.0972]
_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  3  0.0000  0.0000  0.0243  1.0
  Na  Na1  3  0.0000  0.0000  0.5200  1.0
  Ag  Ag2  3  0.0000  0.0000  0.3226  1.0
  Ge  Ge3  3  0.0000  0.0000  0.8254  1.0
  Br  Br4  9  0.0171  0.3902  0.5772  1.0
  Br  Br5  9  0.0567  0.7192  0.4131  1.0
]