data_[Tb1Nd1Ho1Hg1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Nd  1.1400  1.8500  1.2765
  Ho  1.2300  1.7500  1.0410
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.6407]
_cell_length_b [3.6407]
_cell_length_c [8.9766]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [TbNdHoHg]
_chemical_formula_sum '[Tb1 Nd1 Ho1 Hg1]'
_cell_volume [118.9807]
_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
[
  Tb  Tb0  1  0.5000  0.5000  0.7889  1.0
  Nd  Nd1  1  0.0000  0.0000  0.0730  1.0
  Ho  Ho2  1  0.5000  0.5000  0.3549  1.0
  Hg  Hg3  1  0.0000  0.0000  0.5679  1.0
]