data_[La2Mg6Hg18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Mg  1.3100  1.5000  0.8600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.1991]
_cell_length_b [14.2794]
_cell_length_c [7.6270]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.9755]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [La(MgHg3)3]
_chemical_formula_sum '[La2 Mg6 Hg18]'
_cell_volume [616.8906]
_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
[
  La  La0  2  0.0000  0.0000  0.0000  1
  Mg  Mg1  4  0.2500  0.2500  0.0000  1
  Mg  Mg2  2  0.0000  0.5000  0.5000  1
  Hg  Hg3  8  0.0860  0.3915  0.2138  1
  Hg  Hg4  8  0.1653  0.1735  0.3341  1
  Hg  Hg5  2  0.0000  0.0000  0.5000  1
]