data_NaTlPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.61
_cell_length_b   7.59
_cell_length_c   3.45
_cell_angle_alpha   77.18
_cell_angle_beta   76.54
_cell_angle_gamma   26.29
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaTlPb
_chemical_formula_sum   'Na1 Tl1 Pb1'
_cell_volume   85.84
_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  0.41  0.47  0.06  1.0
  Tl  Tl2  1  0.41  0.47  0.62  1.0
  Pb  Pb1  1  0.41  0.47  0.71  1.0

data_NaTlPb
_symmetry_space_group_name_H-M   Imm2
_cell_length_a   3.45
_cell_length_b   14.39
_cell_length_c   3.45
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   44
_chemical_formula_structural   NaTlPb
_chemical_formula_sum   'Na2 Tl2 Pb2'
_cell_volume   171.73
_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, y, z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z+1/2'
  6  '-x+1/2, -y+1/2, z+1/2'
  7  '-x+1/2, y+1/2, z+1/2'
  8  'x+1/2, -y+1/2, z+1/2'
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  0.47  1.0
  Tl  Tl1  2  0.0  0.0  0.91  1.0
  Pb  Pb2  2  0.0  0.0  0.81  1.0

Na Tl Pb