data_SiAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.36
_cell_length_b   7.05
_cell_length_c   2.72
_cell_angle_alpha   85.65
_cell_angle_beta   72.77
_cell_angle_gamma   21.59
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiAg2
_chemical_formula_sum   'Si1 Ag2'
_cell_volume   40.76
_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
  Si  Si2  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.21  0.43  0.69  1.0
  Ag  Ag1  1  0.21  0.43  0.21  1.0

data_SiAg2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.41
_cell_length_b   2.72
_cell_length_c   7.05
_cell_angle_alpha   85.65
_cell_angle_beta   80.15
_cell_angle_gamma   63.65
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiAg2
_chemical_formula_sum   'Si1 Ag2'
_cell_volume   40.76
_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
  Si  Si0  1  0.0  0.0  0.0  1.0
  Ag  Ag1  1  0.79  0.41  0.64  1.0
  Ag  Ag2  1  0.79  0.89  0.64  1.0

Si Ag Ag
Si Ag Ag 0 1 o - - 0 1 - o o 0 2 o - o 0 2 - o o 0 0 + - o 0 0 + - - 0 0 o o + 1 2 o o o 1 2 o o + 