data_[Ho4Ni4Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Ni  1.9100  1.3500  0.7400
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [7.3086]
_cell_length_b [7.3086]
_cell_length_c [3.7258]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Ho2Ni2Hg]
_chemical_formula_sum '[Ho4 Ni4 Hg2]'
_cell_volume [199.0129]
_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  4  0.1778  0.3222  0.5000  1.0
  Ni  Ni1  4  0.1166  0.6166  0.0000  1.0
  Hg  Hg2  2  0.0000  0.0000  0.0000  1.0
]