data_[Sm12Mg10Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Mg  1.3100  1.5000  0.8600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [5.4235]
_cell_length_b [16.2943]
_cell_length_c [7.6552]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Sm6Mg5Hg]
_chemical_formula_sum '[Sm12 Mg10 Hg2]'
_cell_volume [676.5079]
_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  8  0.0000  0.1653  0.2508  1
  Sm  Sm1  4  0.0000  0.5000  0.2477  1
  Mg  Mg2  4  0.0000  0.3283  0.0000  1
  Mg  Mg3  4  0.0000  0.3324  0.5000  1
  Mg  Mg4  2  0.0000  0.0000  0.5000  1
  Hg  Hg5  2  0.0000  0.0000  0.0000  1
]