data_Ag3Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.27
_cell_length_b   5.27
_cell_length_c   5.2
_cell_angle_alpha   102.24
_cell_angle_beta   102.24
_cell_angle_gamma   36.34
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ag3Pb
_chemical_formula_sum   'Ag3 Pb1'
_cell_volume   83.47
_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
  Ag  Ag0  1  0.0  0.0  0.0  1.0
  Ag  Ag1  1  0.69  0.0  0.89  1.0
  Ag  Ag2  1  0.16  0.0  0.18  1.0
  Pb  Pb3  1  0.43  0.0  0.53  1.0

data_Ag3Pb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.29
_cell_length_b   5.2
_cell_length_c   5.27
_cell_angle_alpha   102.24
_cell_angle_beta   108.17
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ag3Pb
_chemical_formula_sum   'Ag3 Pb1'
_cell_volume   83.47
_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
  Ag  Ag0  1  0.0  0.0  0.0  1.0
  Ag  Ag1  1  0.0  0.18  0.16  1.0
  Ag  Ag2  1  0.0  0.89  0.69  1.0
  Pb  Pb3  1  0.0  0.53  0.43  1.0

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