data_Ag2Sn3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.23
_cell_length_b   11.23
_cell_length_c   11.23
_cell_angle_alpha   18.08
_cell_angle_beta   18.08
_cell_angle_gamma   18.08
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ag2Sn3
_chemical_formula_sum   'Ag2 Sn3'
_cell_volume   119.24
_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  0.94  1.0
  Ag  Ag1  1  0.0  0.0  0.2  1.0
  Sn  Sn2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.76  1.0
  Sn  Sn4  1  0.0  0.0  0.38  1.0

data_Ag2Sn3
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.11
_cell_length_b   3.53
_cell_length_c   11.23
_cell_angle_alpha   90.0
_cell_angle_beta   100.45
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ag2Sn3
_chemical_formula_sum   'Ag4 Sn6'
_cell_volume   238.49
_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  0.06  1.0
  Ag  Ag1  2  0.0  0.0  0.8  1.0
  Sn  Sn2  2  0.0  0.0  0.0  1.0
  Sn  Sn3  2  0.0  0.0  0.24  1.0
  Sn  Sn4  2  0.0  0.0  0.62  1.0

Ag Ag Sn Sn Sn