data_SrSi2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.49
_cell_length_b   5.49
_cell_length_c   3.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   111.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrSi2Ag
_chemical_formula_sum   'Sr1 Si2 Ag1'
_cell_volume   84.72
_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
  Sr  Sr3  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.54  0.73  0.51  1.0
  Si  Si2  1  0.54  0.27  0.51  1.0
  Ag  Ag0  1  0.08  0.0  0.0  1.0

data_SrSi2Ag
_symmetry_space_group_name_H-M   Pm
_cell_length_a   5.49
_cell_length_b   3.03
_cell_length_c   5.49
_cell_angle_alpha   90.0
_cell_angle_beta   111.81
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   SrSi2Ag
_chemical_formula_sum   'Sr1 Si2 Ag1'
_cell_volume   84.72
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Sr  Sr0  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.54  0.5  0.27  1.0
  Si  Si2  1  0.54  0.5  0.73  1.0
  Ag  Ag3  1  0.08  0.0  0.0  1.0

Sr Si Si Ag
Sr Si Si Ag 0 3 o o o 0 1 - - o 0 1 - - - 0 2 o o o 0 2 o o - 1 2 o + o 1 2 o o o 1 3 + + o 1 3 + + + 1 1 o o + 2 3 o o o 2 3 o o + 2 2 o o + 