data_[Na2Mg2Tl2Pb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Tl  1.6200  1.9000  1.3325
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [9.9777]
_cell_length_b [3.5304]
_cell_length_c [10.3749]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.4499]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaMgTlPb3]
_chemical_formula_sum '[Na2 Mg2 Tl2 Pb6]'
_cell_volume [348.6354]
_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  0.1308  0.2500  0.2869  1.0
  Mg  Mg1  2  0.3779  0.7500  0.8773  1.0
  Tl  Tl2  2  0.1216  0.2500  0.6270  1.0
  Pb  Pb3  2  0.1348  0.2500  0.9565  1.0
  Pb  Pb4  2  0.3707  0.7500  0.5411  1.0
  Pb  Pb5  2  0.3868  0.7500  0.1976  1.0
]