data_NaAgPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.28
_cell_length_b   5.28
_cell_length_c   5.28
_cell_angle_alpha   120.9
_cell_angle_beta   120.9
_cell_angle_gamma   88.45
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaAgPb2
_chemical_formula_sum   'Na1 Ag1 Pb2'
_cell_volume   102.4
_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
  Ag  Ag0  1  0.0  0.0  0.78  1.0
  Pb  Pb2  1  0.6  0.0  0.89  1.0
  Pb  Pb3  1  0.0  0.6  0.89  1.0

data_NaAgPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.36
_cell_length_b   7.36
_cell_length_c   5.28
_cell_angle_alpha   90.0
_cell_angle_beta   134.23
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaAgPb2
_chemical_formula_sum   'Na2 Ag2 Pb4'
_cell_volume   204.79
_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
  Ag  Ag1  2  0.22  0.0  0.22  1.0
  Pb  Pb2  4  0.41  0.3  0.71  1.0

Na Ag Pb Pb
Na Ag Pb Pb 0 1 o o - 0 2 - o - 0 3 o - - 