data_[Sr2Er2Ag2Br12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P4_2nm]
_cell_length_a [6.9271]
_cell_length_b [6.9271]
_cell_length_c [13.0385]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [102]
_chemical_formula_structural [SrErAgBr6]
_chemical_formula_sum '[Sr2 Er2 Ag2 Br12]'
_cell_volume [625.6465]
_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
[
  Sr  Sr0  2  0.0000  0.0000  0.6695  1.0
  Er  Er1  2  0.0000  0.0000  0.3342  1.0
  Ag  Ag2  2  0.0000  0.0000  0.9974  1.0
  Br  Br3  4  0.1867  0.8133  0.1715  1.0
  Br  Br4  4  0.1976  0.8024  0.4866  1.0
  Br  Br5  4  0.2133  0.7867  0.8413  1.0
]