data_[Er4Mg2Ag16]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.4703]
_cell_length_b [4.7531]
_cell_length_c [7.1189]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.8236]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Er2MgAg8]
_chemical_formula_sum '[Er4 Mg2 Ag16]'
_cell_volume [444.3871]
_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  4  0.2165  0.0000  0.6509  1.0
  Mg  Mg1  2  0.0000  0.5000  0.0000  1.0
  Ag  Ag2  4  0.0253  0.0000  0.7238  1.0
  Ag  Ag3  4  0.0881  0.5000  0.4348  1.0
  Ag  Ag4  4  0.1438  0.0000  0.1615  1.0
  Ag  Ag5  4  0.1659  0.5000  0.8834  1.0
]