data_[Y2Ta1Hg1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Ta  1.5000  1.4500  0.8200
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.2861]
_cell_length_b [3.2861]
_cell_length_c [9.2663]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [Y2TaHg]
_chemical_formula_sum '[Y2 Ta1 Hg1]'
_cell_volume [100.0589]
_cell_formula_units_Z [1]
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
[
  Y  Y0  1  0.0000  0.0000  0.9622  1
  Y  Y1  1  0.5000  0.5000  0.2857  1
  Ta  Ta2  1  0.5000  0.5000  0.7302  1
  Hg  Hg3  1  0.0000  0.0000  0.5220  1
]