data_NaPb2Cl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.48
_cell_length_b   3.48
_cell_length_c   9.55
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaPb2Cl
_chemical_formula_sum   'Na1 Pb2 Cl1'
_cell_volume   115.55
_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  0.0  1.0
  Pb  Pb2  1  0.74  0.74  0.51  1.0
  Pb  Pb3  1  0.74  0.74  0.04  1.0
  Cl  Cl0  1  0.0  0.0  0.77  1.0

data_NaPb2Cl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.92
_cell_length_b   4.92
_cell_length_c   9.55
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaPb2Cl
_chemical_formula_sum   'Na2 Pb4 Cl2'
_cell_volume   231.1
_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
  Pb  Pb1  2  0.24  0.5  0.04  1.0
  Pb  Pb2  2  0.24  0.5  0.51  1.0
  Cl  Cl3  2  0.0  0.0  0.77  1.0

Na Pb Pb Cl
Na Pb Pb Cl 0 2 - - o 0 3 o o - 1 3 o + o 1 3 + o o 1 3 + + o 1 1 + o o 1 1 o + o 