data_[Er4Hg2Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.1080]
_cell_length_b [4.4279]
_cell_length_c [8.6846]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.5906]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Er2HgPb]
_chemical_formula_sum '[Er4 Hg2 Pb2]'
_cell_volume [221.2840]
_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  0.2148  0.2500  0.4346  1.0
  Er  Er1  2  0.3078  0.7500  0.0684  1.0
  Hg  Hg2  2  0.3937  0.7500  0.7014  1.0
  Pb  Pb3  2  0.1064  0.2500  0.7934  1.0
]