data_[Na3Tb3Ag6Cl18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tb  1.1000  1.7500  0.9815
  Ag  1.9300  1.6000  1.0867
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [6.9289]
_cell_length_b [6.9289]
_cell_length_c [18.9408]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [NaTb(AgCl3)2]
_chemical_formula_sum '[Na3 Tb3 Ag6 Cl18]'
_cell_volume [787.5154]
_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  0.8187  1.0
  Tb  Tb1  3  0.0000  0.0000  0.3232  1.0
  Ag  Ag2  3  0.0000  0.0000  0.0177  1.0
  Ag  Ag3  3  0.0000  0.0000  0.5207  1.0
  Cl  Cl4  9  0.0030  0.3541  0.5819  1.0
  Cl  Cl5  9  0.0316  0.6668  0.0782  1.0
]