data_[Rb4Er4Ag4F20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.2425]
_cell_length_b [11.1116]
_cell_length_c [8.3216]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.1139]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbErAgF5]
_chemical_formula_sum '[Rb4 Er4 Ag4 F20]'
_cell_volume [643.3791]
_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
[
  Rb  Rb0  4  0.0000  0.3367  0.7500  1
  Er  Er1  4  0.0000  0.0000  0.0000  1
  Ag  Ag2  4  0.0000  0.3265  0.2500  1
  F  F3  8  0.0920  0.1793  0.0836  1
  F  F4  8  0.2005  0.4525  0.4483  1
  F  F5  4  0.0000  0.0607  0.7500  1
]