data_[Na2Hg2Sb4Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
  Sb  2.0500  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.6231]
_cell_length_b [9.8125]
_cell_length_c [8.2327]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [NaHg(SbPb)2]
_chemical_formula_sum '[Na2 Hg2 Sb4 Pb4]'
_cell_volume [373.4665]
_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
[
  Na  Na0  2  0.0000  0.4317  0.9450  1.0
  Hg  Hg1  2  0.5000  0.3222  0.6727  1.0
  Sb  Sb2  2  0.0000  0.1174  0.7718  1.0
  Sb  Sb3  2  0.5000  0.3687  0.2252  1.0
  Pb  Pb4  2  0.0000  0.1975  0.3854  1.0
  Pb  Pb5  2  0.5000  0.0813  0.0456  1.0
]