data_[Ho2Er14Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.4833]
_cell_length_b [5.6406]
_cell_length_c [9.6618]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.1776]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [HoEr7Hg4]
_chemical_formula_sum '[Ho2 Er14 Hg8]'
_cell_volume [668.0739]
_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
[
  Ho  Ho0  2  0.0000  0.0000  0.0000  1
  Er  Er1  4  0.0670  0.0000  0.4058  1
  Er  Er2  4  0.2084  0.0000  0.8846  1
  Er  Er3  4  0.2336  0.5000  0.6859  1
  Er  Er4  2  0.0000  0.5000  0.0000  1
  Hg  Hg5  4  0.0471  0.5000  0.7255  1
  Hg  Hg6  4  0.1887  0.5000  0.3392  1
]