data_[Sm2Hg12Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.7447]
_cell_length_b [15.9219]
_cell_length_c [4.8110]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.2051]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm(Hg3Pb)2]
_chemical_formula_sum '[Sm2 Hg12 Pb4]'
_cell_volume [484.8507]
_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  0.0000  0.5000  0.0000  1
  Hg  Hg1  8  0.1638  0.1578  0.8352  1
  Hg  Hg2  4  0.1574  0.0000  0.3313  1
  Pb  Pb3  4  0.0000  0.3332  0.5000  1
]