data_[Nd4Tl4Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Tl  1.6200  1.9000  1.3325
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [3.7482]
_cell_length_b [22.2607]
_cell_length_c [3.5300]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Nd2Tl2Hg]
_chemical_formula_sum '[Nd4 Tl4 Hg2]'
_cell_volume [294.5387]
_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
[
  Nd  Nd0  4  0.0000  0.4056  0.5000  1
  Tl  Tl1  4  0.0000  0.1939  0.0000  1
  Hg  Hg2  2  0.0000  0.0000  0.0000  1
]