data_[Na4Sr8Li8Hg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Li  0.9800  1.4500  0.9000
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [7.2200]
_cell_length_b [14.6979]
_cell_length_c [7.7473]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [NaSr2Li2Hg]
_chemical_formula_sum '[Na4 Sr8 Li8 Hg4]'
_cell_volume [822.1333]
_cell_formula_units_Z [4]
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
[
  Na  Na0  4  0.0000  0.0000  0.2500  1.0
  Sr  Sr1  8  0.2134  0.3335  0.0000  1.0
  Li  Li2  8  0.2228  0.5880  0.0000  1.0
  Hg  Hg3  4  0.0000  0.5000  0.2500  1.0
]