data_NaTe2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.68
_cell_length_b   5.68
_cell_length_c   5.68
_cell_angle_alpha   123.1
_cell_angle_beta   123.1
_cell_angle_gamma   84.71
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaTe2Pb
_chemical_formula_sum   'Na1 Te2 Pb1'
_cell_volume   122.84
_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  0.0  0.0  0.0  1.0
  Te  Te2  1  0.0  0.71  0.1  1.0
  Te  Te3  1  0.71  0.0  0.1  1.0
  Pb  Pb1  1  0.0  0.0  0.2  1.0

data_NaTe2Pb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.65
_cell_length_b   7.65
_cell_length_c   5.68
_cell_angle_alpha   90.0
_cell_angle_beta   132.36
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaTe2Pb
_chemical_formula_sum   'Na2 Te4 Pb2'
_cell_volume   245.68
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  0.0  0.0  0.0  1.0
  Te  Te1  4  0.25  0.35  0.61  1.0
  Pb  Pb2  2  0.3  0.5  0.8  1.0

Na Te Te Pb
Na Te Te Pb 0 3 o o o 1 3 o + o 2 3 + o o 