data_[Na4Er4Ag4Cl20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.8197]
_cell_length_b [13.0931]
_cell_length_c [9.7636]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.8428]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaErAgCl5]
_chemical_formula_sum '[Na4 Er4 Ag4 Cl20]'
_cell_volume [940.2807]
_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  0.0000  0.4258  0.7500  1.0
  Er  Er1  4  0.0000  0.0000  0.0000  1.0
  Ag  Ag2  4  0.0000  0.2858  0.2500  1.0
  Cl  Cl3  8  0.1685  0.1651  0.1275  1.0
  Cl  Cl4  8  0.1756  0.4201  0.4523  1.0
  Cl  Cl5  4  0.0000  0.0782  0.7500  1.0
]