data_[Sr6Hg2Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.5648]
_cell_length_b [5.0144]
_cell_length_c [24.4935]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Sr3HgPb4]
_chemical_formula_sum '[Sr6 Hg2 Pb8]'
_cell_volume [560.6506]
_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
[
  Sr  Sr0  4  0.0000  0.5000  0.3660  1
  Sr  Sr1  2  0.0000  0.0000  0.5000  1
  Hg  Hg2  2  0.0000  0.0000  0.0000  1
  Pb  Pb3  4  0.0000  0.5000  0.1028  1
  Pb  Pb4  4  0.0000  0.5000  0.2268  1
]