data_[Er6Ag8Hg4]
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
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.8592]
_cell_length_b [5.1244]
_cell_length_c [9.0456]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.1385]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Er3(Ag2Hg)2]
_chemical_formula_sum '[Er6 Ag8 Hg4]'
_cell_volume [409.5799]
_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  0.1442  0.5000  0.7404  1.0
  Er  Er1  2  0.0000  0.0000  0.0000  1.0
  Ag  Ag2  4  0.0296  0.0000  0.3440  1.0
  Ag  Ag3  4  0.1724  0.5000  0.0703  1.0
  Hg  Hg4  4  0.1983  0.5000  0.3955  1.0
]