data_[Na2Sn1Te4Pb1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
  Te  2.1000  1.4000  1.2933
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [7.7048]
_cell_length_b [4.3870]
_cell_length_c [8.0717]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.8899]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Na2SnTe4Pb]
_chemical_formula_sum '[Na2 Sn1 Te4 Pb1]'
_cell_volume [259.6433]
_cell_formula_units_Z [1]
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  1  0.0000  0.5000  0.5000  1
  Na  Na1  1  0.5000  0.0000  0.5000  1
  Sn  Sn2  1  0.0000  0.0000  0.0000  1
  Te  Te3  2  0.2300  0.5000  0.2321  1
  Te  Te4  2  0.2388  0.0000  0.7613  1
  Pb  Pb5  1  0.5000  0.5000  0.0000  1
]