data_[Er2Ag2S4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
  S  2.5800  1.0000  0.8800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.9599]
_cell_length_b [5.5640]
_cell_length_c [7.9900]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.8295]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [ErAg(SO4)2]
_chemical_formula_sum '[Er2 Ag2 S4 O16]'
_cell_volume [393.6068]
_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  0.0000  1.0
  Ag  Ag1  2  0.0000  0.0000  0.5000  1.0
  S  S2  4  0.1771  0.5000  0.2235  1.0
  O  O3  8  0.0788  0.2824  0.1938  1.0
  O  O4  4  0.2166  0.0000  0.9028  1.0
  O  O5  4  0.2431  0.0000  0.6020  1.0
]