data_[Er2Mg2Ag2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Mg  1.3100  1.5000  0.8600
  Ag  1.9300  1.6000  1.0867
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P4_2nm]
_cell_length_a [5.1714]
_cell_length_b [5.1714]
_cell_length_c [10.1319]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [102]
_chemical_formula_structural [ErMgAgF6]
_chemical_formula_sum '[Er2 Mg2 Ag2 F12]'
_cell_volume [270.9588]
_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
[
  Er  Er0  2  0.0000  0.0000  0.6712  1.0
  Mg  Mg1  2  0.0000  0.0000  0.3313  1.0
  Ag  Ag2  2  0.0000  0.0000  0.9992  1.0
  F  F3  4  0.1730  0.8270  0.4919  1.0
  F  F4  4  0.2047  0.7953  0.1965  1.0
  F  F5  4  0.2261  0.7739  0.8107  1.0
]