data_Ag2Pb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.63
_cell_length_b   12.63
_cell_length_c   12.63
_cell_angle_alpha   15.84
_cell_angle_beta   15.84
_cell_angle_gamma   15.84
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ag2Pb3
_chemical_formula_sum   'Ag2 Pb3'
_cell_volume   130.93
_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  0.84  1.0
  Ag  Ag1  1  0.0  0.0  0.57  1.0
  Pb  Pb2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.0  0.0  0.69  1.0
  Pb  Pb4  1  0.0  0.0  0.72  1.0

data_Ag2Pb3
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.03
_cell_length_b   3.48
_cell_length_c   12.63
_cell_angle_alpha   90.0
_cell_angle_beta   99.16
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ag2Pb3
_chemical_formula_sum   'Ag4 Pb6'
_cell_volume   261.86
_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
  Ag  Ag0  2  0.0  0.0  0.16  1.0
  Ag  Ag1  2  0.0  0.0  0.43  1.0
  Pb  Pb2  2  0.0  0.0  0.0  1.0
  Pb  Pb3  2  0.0  0.0  0.28  1.0
  Pb  Pb4  2  0.0  0.0  0.31  1.0

Ag Ag Pb Pb Pb