data_[K4Er2Ag2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  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 [P2_1/c]
_cell_length_a [6.2876]
_cell_length_b [6.5100]
_cell_length_c [10.7430]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.8410]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [K2ErAgF6]
_chemical_formula_sum '[K4 Er2 Ag2 F12]'
_cell_volume [360.9103]
_cell_formula_units_Z [2]
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
[
  K  K0  4  0.2666  0.5510  0.7526  1.0
  Er  Er1  2  0.0000  0.0000  0.5000  1.0
  Ag  Ag2  2  0.5000  0.0000  0.0000  1.0
  F  F3  4  0.1330  0.5449  0.2332  1.0
  F  F4  4  0.2362  0.2284  0.0596  1.0
  F  F5  4  0.3227  0.6823  0.0443  1.0
]