data_[Sm2Tl2Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Tl  1.6200  1.9000  1.3325
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P6_3/mmc]
_cell_length_a [5.2939]
_cell_length_b [5.2939]
_cell_length_c [6.5560]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [194]
_chemical_formula_structural [SmTlHg]
_chemical_formula_sum '[Sm2 Tl2 Hg2]'
_cell_volume [159.1218]
_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
[
  Sm  Sm0  2  0.3333  0.6667  0.7500  1
  Tl  Tl1  2  0.0000  0.0000  0.0000  1
  Hg  Hg2  2  0.3333  0.6667  0.2500  1
]