data_NaAlPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.26
_cell_length_b   7.26
_cell_length_c   7.26
_cell_angle_alpha   152.82
_cell_angle_beta   152.82
_cell_angle_gamma   38.82
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaAlPb
_chemical_formula_sum   'Na1 Al1 Pb1'
_cell_volume   79.55
_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  Na1  1  0.0  0.0  0.68  1.0
  Al  Al0  1  0.0  0.0  0.09  1.0
  Pb  Pb2  1  0.0  0.0  0.91  1.0

data_NaAlPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.82
_cell_length_b   4.82
_cell_length_c   7.26
_cell_angle_alpha   90.0
_cell_angle_beta   109.41
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaAlPb
_chemical_formula_sum   'Na2 Al2 Pb2'
_cell_volume   159.09
_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  0.18  0.5  0.68  1.0
  Al  Al1  2  0.09  0.0  0.09  1.0
  Pb  Pb2  2  0.41  0.5  0.91  1.0

Na Al Pb
Na Al Pb 0 2 o o o 1 2 o o - 